3.1 Connection to input/output connectorThe input and output connectors conform to the MIL-C-83503.For the input and output connectors pin assignment, refer to section 1.4.1) Compliant connectors (commercially available connectors)
Use a 40-pin (1-key) socket connector conforming to MIL-C-83503.Confirm in advance that the connectors do not interfere with other partsincluding connector covers.
2) Connectors for user-made input/output cables (available from Mitsubishi)Users should provide electric wires and a pressure bonding tool.
3.2 WiringNote:Make sure to properly wire in accordance with the encoder output specifications. Incorrect wiring may cause accidents or damage to the product.
3.2.1 NPN output encoders
WIRING PRECAUTIONS
Make sure to observe the following precautions in order to prevent anydamage to the machinery or accidents due to abnormal data written to thePLC under the influence of noise:
1) Do not bundle the main circuit line together with or lay it close to the maincircuit, high-voltage line or load line. Otherwise, noise disturbance and/orsurge induction are likely to take place. As a guideline, lay the control line atleast 100mm (3.94") or more away from the main circuit or high-voltage lines.
2) Ground the shield wire or shield of the shielded cable at two points; on thePLC and the device on other end. However, do not use common groundingwith heavy electrical systems.
Model name and composition of input/output connector
Applicable electric wire (UL-1061 are recommended)
and tool
Our model name
Details of part (made by DDK Ltd.)
Electric wire size
Pressure bonding tool (made by DDK Ltd.)
FX-I/O-CON2-Sfor bulk wire(2-piece set)
Housing:HU-400S2-001Solderless contact:HU-411S
AWG22 (0.3mm2)
357J-5538
FX-I/O-CON2-SAfor bulk wire(2-piece set)
Housing:HU-400S2-001Solderless contact:HU-411SA
AWG20 (0.5mm2)
357J-13963
Encoder (NPN)
+24V
0V
24V DC*1
*1
PhaseZ
PhaseA
Class D
PRESET*3
DISABLE
A24+
A12+
A 5+
A -
3.3k
1.5k
0.2k
0.12k
XD24
XD 5
COMD
1.65k
0.47k
0.22k
*1
*1
Wiring of the B phase is the same as that of the A phase.
*1
*2*2
P24+
P12+
P 5+
P -
3.3k
1.5k
0.2k
0.12k
Class D
Class D
Class D Class D
Class D
FX3U
FX3UC
FX3U-2HC
*3
Shielded
Twisted-Pair
Shielded
Twisted-Pair
Shielded
Twisted-Pair
Drive power supply of the encoder.Use either 24V DC, 12V DC, or 5V DC according to the encoder type.When connecting the A phase, the B phase, and the Z phase to theFX3U-2HC, connect to the power supply terminal.When using 24V DC for PRESET or DISABLE signals, connect to the 24VDC (P24+, XD24) terminal
*1.
This wiring is unnecessary when not using the PRESET function or the
DISABLE function.
*2.
*3.
3.2.2 PNP output encoders
3.2.3 Differential-Line-Driver output encodersWhen applying the Differential-Line-Driver encoder (AM26C31 or equivalent) to theFX3U-2HC, connect the encoder output with the 5V DC terminal as shown in the figurebelow.
3.2.4 YH1, YH2 output wiring [Sink wiring]
CautionA protection fuse should be inserted at the output.Use a load power supply capacity that is at least 2 times larger than the total rated fuse capacity.
Class D
Encoder (PNP)
+24V
0V
24V DC
*1
PRESET *3
DISABLE*3
PhaseA
*1
*1
*1
*3.
*2. Wiring of the B phase is the same as that of the A phase.
A24+
A12+
A 5+
A -
3.3k
1.5k
0.2k
0.12k
*2 *2
Class D
XD24
XD 5
COMD
1.65k
0.47k
0.22k
P24+
P12+
P 5+
P -
3.3k
1.5k
0.2k
0.12k
Class D
Class D
Class D
Class D
FX3U
FX3UC
FX3U-2HC Shielded
Twisted-Pair
Shielded
Twisted-Pair
Shielded
Twisted-Pair
*1
PhaseZ
Drive power supply of the encoder.Use either 24V DC, 12V DC, or 5V DC according to the encoder type.When connecting the A phase, the B phase, and the Z phase to theFX3U-2HC, connect to the power supply terminal.When using 24V DC for PRESET or DISABLE signals, connect to the 24VDC (P24+, XD24) terminal.
*1.
This wiring is unnecessary when not using the PRESET function or the
DISABLE function.
Class D
Encoder
A 5+
A -
0.2k
0.12k
XD 5
COMD
0.47k
0.22k
+5V
0V
5V DC
LA
LAR
P 5+
P -
0.2k
0.12k
PRESET *2
Wiring of the B phase is the same as that of the A phase.
DISABLE *2
LZR
LZ
*1 *1
FX3U
FX3UC
FX3U-2HC
This wiring is unnecessary when not using the PRESET function or the
DISABLE function.
*1.
*2.
YH1+
YH1-
YH2+
YH2-
Fuse
FX3U-2HC
Output load driving
power, 5 - 24V DC
3.2.5 YH1, YH2 output wiring [Source wiring]
CautionA protection fuse should be inserted at the output.Use a load power supply capacity that is at least 2 times larger than the total rated fuse capacity.
3.3 GroundingGrounding should be performed as stated below.
The grounding resistance should be 100 or less. Independent grounding should be performed for best results.
When independent grounding is not performed, perform "shared grounding"of the following figure.
For details, refer to the FX3U Series User's Manual - Hardware Edition.For details, refer to the FX3UC Series User's Manual - Hardware Edition.For details, refer to the MELSEC iQ-F FX5U User's Manual (Hardware).
For details, refer to the MELSEC iQ-F FX5UC User's Manual (Hardware).
The grounding wire size should be AWG 22-20 (0.3-0.5 mm2). The grounding point should be close to the PLC, and all grounding wires
should be as short as possible.
4. Specifications
4.1 General SpecificationsThe general specifications are equivalent to the PLC main unit. (For general specifications, refer to the manual of the PLC main unit.)Caution
When a dielectric withstand test of this product is performed, ground all terminals of this product and the PLC unit.
4.2 Power Supply Specifications
DESIGN PRECAUTIONS
Make sure to have the following safety circuits outside of the PLC to ensure safesystem operation even during external power supply problems or PLC failure.Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protectioncircuit, an interlock circuit for opposite movements (such as normal vs.reverse rotation), and an interlock circuit (to prevent damage to theequipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timererror, during self-diagnosis, all outputs are turned off. Also, when an error thatcannot be detected by the PLC CPU occurs in an input/output control block,output control may be disabled. External circuits and mechanisms should be designed to ensure safemachinery operation in such a case.
3) Note that when an error occurs in a relay, triac or transistor output device, theoutput could be held either on or off.For output signals that may lead to serious accidents, external circuits andmechanisms should be designed to ensure safe machinery operation in sucha case.
DESIGN PRECAUTIONS
Do not bundle the control line together with or lay it close to the main circuit orpower line. As a guideline, lay the control line at least 100mm (3.94") or moreaway from the main circuit or power line.Noise may cause malfunctions.
Install module so that excessive force will not be applied to I/O connectors.Failure to do so may result in wire damage/breakage or PLC failure.
Item Specifications
Units driving power5V DC, 245mA (Internal power supply from main unitor extension power supply unit)
Allowable instantaneous power failure time
Operation can be continued upon occurrence ofinstantaneous power failure for 1 ms or less.
YH1+
YH1-
YH2+
YH2-Fuse
FX3U-2HC
Output loaddriving power,5 - 24V DC
PLCPLCPLCAnother
equipment
Shared groundingGood condition
Common groundingNot allowed
Independent groundingBest condition
Anotherequipment
Anotherequipment
JY997D36701E
Safety Precaution (Read these precautions before use.)
This manual classifies the safety precautions into two categories:
and .
Depending on the circumstances, procedures indicated by mayalso cause severe injury.It is important to follow all precautions for personal safety.
Associated Manuals
How to obtain manualsFor product manuals or documents, consult with the Mitsubishi Electric dealerfrom who you purchased your product.
Certification of UL, cUL standardsThe following product has UL and cUL certification.
UL, cUL File Number:E95239Models: MELSEC FX3U series manufacturedfrom December 1st, 2009 FX3U-2HC
Indicates that incorrect handling may cause hazardousconditions, resulting in death or severe injury.
Indicates that incorrect handling may cause hazardousconditions, resulting in medium or slight personal injuryor physical damage.
Manual name Manual No. Description
FX3U Series User’s Manual - Hardware Edition
JY997D16501MODEL CODE:
09R516
Explains the FX3U Series PLC specifications for I/O, wiring, installation, and maintenance.
FX3UC Series User’s Manual - Hardware Edition
JY997D28701MODEL CODE:
09R519
Explains the FX3UC Series PLC specifications for I/O, wiring, installation, and maintenance.
FX3S/FX3G/FX3GC/FX3U/FX3UC Series Programming Manual - Basic & Applied Instruction Edition
JY997D16601MODEL CODE:
09R517
Describes FX3S/FX3G/FX3GC/FX3U/FX3UC Series PLC programming for basic/applied instructions and devices.
MELSEC iQ-F FX5UUser's Manual(Hardware)
JY997D55301MODEL CODE:
09R536
Explains the FX5U PLC specifications for I/O, wiring, installation, and maintenance.
MELSEC iQ-F FX5UCUser's Manual(Hardware)
JY997D61401MODEL CODE:
09R558
Explains the FX5UC PLC specifications for I/O, wiring, installation, and maintenance.
FX3U-2HC
USER’S MANUAL
This manual describes the part names, dimensions, mounting, wiring, andspecifications of the product. Before use, read this manual and the manuals of allrelevant products fully to acquire proficiency in handling and operating the product.Make sure to learn all the product information, safety information, and precautions.Store this manual in a safe place so that it can be taken out and read whenevernecessary. Always forward it to the end user.Registration:The company names, system names and product names mentioned in this manualare either registered trademarks or trademarks of their respective companies.
In some cases, trademark symbols such as '' or '' are not specified in this manual.
Effective March 2019Specifications are subject to change without notice.
Manual Number JY997D36701
Revision E
Date March 2019
Compliance with EC directive (CE Marking)This note does not guarantee that an entire mechanical module produced inaccordance with the contents of this note will comply with the following standards.Compliance to EMC directive and LVD directive for the entire mechanical moduleshould be checked by the user / manufacturer. For more details please contact thelocal Mitsubishi Electric sales site.
Requirement for Compliance with EMC directiveThe following products have shown compliance through direct testing (of the identifiedstandards below) and design analysis (through the creation of a technical constructionfile) to the European Directive for Electromagnetic Compatibility (2014/30/EU) whenused as directed by the appropriate documentation.
AttentionThis product is designed for use in industrial applications.
Type: Programmable Controller (Open Type Equipment)Models: MELSEC FX3U series manufacturedfrom December 1st, 2009 FX3U-2HC
Caution for EC Directive Installation in Enclosure
Programmable controllers are open-type devices that must be installed and usedwithin conductive control cabinets. Please use the programmable controller whileinstalled within a conductive shielded control cabinet. Please secure the cabinetdoor to the control cabinet (for conduction). Installation within a control cabinetgreatly affects the safety of the system and aids in shielding noise from theprogrammable controller.
1. Outline1.1 OutlineThe hardware high-speed counter block is a 2-channel high-speed counter. It is aspecial function block for the FX3U/FX3UC/FX5U/FX5UC PLC.
1.2 Major Features of the FX3U-2HC Differential-Line-Driver (AM26C31 or equivalent) and open collector output
encoders are available for the FX3U-2HC. The FX3U-2HC has two outputs per channel. When the counter value coincides with
an output compare value, the appropriate output is set ON. The output transistorsare individually isolated to allow either sink or source connection methods.
Various counter modes, such as 1-phase or 2-phase, 16-bit or 32-bit modes, can beselected using commands in the sequence program. Allow the FX3U-2HC unit torun only after setting these mode parameters.
1.3 Incorporated ItemsVerify that the following product and items are included in the package:
1.4 External Dimensions, Part Names, and Terminal Layout
Weigh: Approx. 0.2 kg (0.44 lbs)
Standard Remark
EN61131-2:2007Programmable controllers
- Equipment requirementsand tests
Compliance with all relevant aspects of the standard.EMI• Radiated Emission• Conducted EmissionEMS• Radiated electromagnetic field• Fast transient burst• Electrostatic discharge• High-energy surge• Voltage drops and interruptions• Conducted RF• Power frequency magnetic field
Included Items
FX3U-2HC 1 Unit
Special unit/block No. label 1 Sheet
Dust proof protection sheet 1 Sheet
Manuals [Japanese version] 1 manual
Manuals [English version] (This manual) 1 manual
87 (3.43")9 (0.36")
[1] [5]
55 (2.17")
[2] [3] [4]
80 (3
.15")
(mou
nting
hole
pitch
)
[9]
[8]
90 (3
.55"
)
4 (0.16")
Without top cover
[5]
[6][5]
2-φ4.5 mounting holes
[7]
2. Installation, Connect to the PLC
No. Name
[1] Direct mounting hole: 2 holes of 4.5 (0.18") (mounting screw: M4 screw)Used when attaching FX3U-2HC directly.
[2]Extension cable (PLC side)Used to connect this special function block to the FX3U/FX3UC main unit or anextension block.
[3] CH1 connector
[4] CH2 connector
[5]
Status LED (the upper side: CH1, the lower side: CH2)
POWER (Green)
Power LEDON when the 5V power supply isnormally supplied from the PLC.
UP (Red) Up count LED The respective LED is ON accordingto up/down count direction of thecounter.DOWN (Red) Down count LED
A (Red) A phase input LED The respective LED is ON (flicker)according to ON/OFF of A and Binput.B (Red) B phase input LED
DIS (Red) DISABLE input LED The respec t ive LED is ON/OFFaccording to ON/OFF of PRESET andDISABLE input.PRE (Red) PRESET input LED
YH1 (Red) YH1 output LED The respec t ive LED is ON/OFFaccording to status of YH1 and YH2output.YH2 (Red) YH2 output LED
[6] Top cover
[7]Extension connector (Extension side)Used to connect a FX3U extension block to the right of this special functionblock. Remove top cover for connecting.
[8] DIN rail mounting hook
[9] DIN rail mounting groove (DIN rail: DIN46277, 35mm (1.38") width)
INSTALLATION PRECAUTIONS
Make sure to cut off all phases of the power supply externally before attemptinginstallation or wiring work. Failure to do so may cause electric shock or damage to the product.
INSTALLATION PRECAUTIONS
Use the product within the generic environment specifications described in PLCmain unit manual.Never use the product in areas with excessive dust, oily smoke, conductive dusts,corrosive gas (salt air, Cl2, H2S, SO2, or NO2), flammable gas, vibration orimpacts, or expose it to high temperature, condensation, or rain and wind. If the product is used in such conditions, electric shock, fire, malfunctions,deterioration or damage may occur.
CH2
A24+
A5+
B24+
B5+
P24+
P5+
A12+
A-
B12+
B-
P12+
P-
XD24
YH1+
YH2+
XD5
COMD
YH1-
YH2-
Notch
CH1
A24+
A5+
B24+
B5+
P24+
P5+
A12+
A-
B12+
B-
P12+
P-
XD24
YH1+
YH2+
XD5
COMD
YH1-
YH2-
YH1 output
YH2 output
Notch
FX3U-2HC connector arrangement
Phase A
input
Phase B
input
PRESET
input
DISABLE
input
2.1 MountingThe product is mounted by the following method.
DIN rail mounting
Direct mounting (mounting screw: M4 screw)For further information on installation arrangements, refer to the following manuals.
Refer to the FX3U Series User's Manual - Hardware Edition.Refer to the FX3UC Series User's Manual - Hardware Edition.Refer to the MELSEC iQ-F FX5U User's Manual (Hardware).
Refer to the MELSEC iQ-F FX5UC User's Manual (Hardware).
2.1.1 DIN Rail MountingThe product can be mounted on a DIN rail(DIN46277, 35mm (1.38") width).
1) Fit the upper edge of the DIN rail mountinggroove (fig. A) onto the DIN rail.
2) Press the product against the DIN rail.
- An interval space of 1 to 2 mm (0.04" to 0.08") between each unit is necessary.
2.1.2 Direct Mounting (mounting screw: M4 screw)The product can be installed directly with screws.Refer to the External Dimensions (section 1.4) for the product’s mounting holepitch information. An interval space between each unit of 1 to 2 mm (0.04" to 0.08") is necessary.
2.2 Connection to the PLCA maximum of eight*1*2 FX3U-2HC(s) are connectable with the main unit or theright side of the powered extension unit/block. A unit number of No.0 to No.7 isassigned based on the order in which special function units/blocks are attached tothe main unit.For connection to an FX3UC Series PLC or FX2NC Series PLC extension block, anFX2NC-CNV-IF or FX3UC-1PS-5V is required.For connection to an FX5U or FX5UC PLC, an FX5-CNV-BUS or FX5-CNV-BUSCis required.
*1 Up to seven special function units/blocks in total can be connected to theFX3UC-32MT-LT(-2) PLC. Unit numbers assigned to special function units/blocks begins with No.1.
*2 Up to two special function units/blocks in total can be connected to theFX5U or FX5UC PLC. Unit numbers assigned to special function units/blocks begins with No.2.
For further information on installation arrangements, refer to the following manuals.Refer to the FX3U Series User's Manual - Hardware Edition.
Refer to the FX3UC Series User's Manual - Hardware Edition.Refer to the MELSEC iQ-F FX5U User's Manual (Hardware).
Refer to the MELSEC iQ-F FX5UC User's Manual (Hardware).
3. Wiring
INSTALLATION PRECAUTIONS
Do not touch the conductive parts of the product directly.Doing so may cause device failures or malfunctions.
Install the product on a flat surface.If the mounting surface is rough, undue force will be applied to the PC board,thereby causing nonconformities.
When drilling screw holes or wiring, make sure cutting or wire debris doesnot enter the ventilation slits.Failure to do so may cause fire, equipment failures or malfunctions.
Be sure to remove the dust proof sheet from the PLC's ventilation port wheninstallation work is completed.Failure to do so may cause fire, equipment failures or malfunctions.
Connect extension cables securely to their designated connectors.Loose connections may cause malfunctions.
WIRING PRECAUTIONS
Make sure to cut off all phases of the power supply externally beforeattempting installation or wiring work.Failure to do so may cause electric shock or damage to the product.
When drilling screw holes or wiring, make sure cutting or wire debris doesnot enter the ventilation slits. Failure to do so may cause fire, equipment failures or malfunctions.
1)
2)
A
4.3 Performance Specifications
4.4 Applicable PLC
*1 An FX2NC-CNV-IF or FX3UC-1PS-5V is necessary to connect the FX3U-2HC with the FX3UC PLC.
*2 An FX5-CNV-BUS or FX5-CNV-BUSC is necessary to connect the FX3U-2HC with the FX5U/FX5UC PLC.
*3 The version number can be checked by reading the last three digits ofdevice D8001/D8101.
Item Specification
Input signal
Signal level(Selected by terminal connec-tion)
Phase A,Phase B,PRESET
[A24+],[B24+],[P24+]
24V DC10%, 8mA or less
[A12+],[B12+],[P12+]
12V DC10%, 8mA or less
[A5+],[B5+],[P5+]
3.0V to 5.5V DC, 12.5mA or less
DISABLE
[XD24]10.8V to 26.4V DC, 15mA or less
[XD5]5V DC10%, 8mA or less
MAX. frequency
1-phaseinput
1 input
200kHz2 input
2 -phaseinput
1 edge count
2 edge count 100kHz
4 edge count 50kHz
Pulse shape
t1(ON/OFF pulse): 1.5s or more (at 200kHz)t2(Phase difference between A and B):
0.75s or more (at 200kHz)t3(Overlap time): 0.7s or more (at 200kHz)t4(Rise/fall time): 0.75s or lessPRESET(Z phase) input signal width:
ON width 1.5s or more,OFF width 30s or more
DISABLE (count prohibit) input signal width:ON width 100s or more,OFF width 100s or more
Count-ing spec-ification
Format
Automatic UP/DOWNHowever, when on 1-phase 1-input mode, UP/DOWN is determined by the following. Hardware UP/DOWN: Up/down count is decided
by OFF/ON of the A-phase input terminal. Software UP/DOWN: Up/down count is decided
by the current value (K0/K1) of BFM #1, #41.
Range
When 32-bit is specified: -2,147,483,648 to +2,147,483,647
When 16-bit is specified: 0 to 65,535 (upper limit is set up by BFM #3, #2, #43, #42.)
Compari-son Type
When the present value and the comparison setvalue of the counter are equal, the comparisonoutput is set (ON) within 30 ms and is cleared (OFF)within 100 ms by the reset command.
Output signal
Types of outputs
YH1+: transistor output forYH1 output
YH1-: transistor output forYH1 output
YH2+: transistor output forYH2 output
YH2-: transistor output for YH2 output
Output capacity
5V ~ 24V DC, 0.5A
I/O occupation 8 points (can be either inputs or outputs)
Model name Applicability
FX3U Series PLC Ver. 2.20 and later*3
FX3UC Series PLC*1 Ver. 2.20 and later*3
FX5U PLC*2 From first production
FX5UC PLC*2 From first production
t4 t4
t1 t1
t2 t3
YH1+,
YH2+
YH1-,
YH2-
JY997D36701E
Safety Precaution (Read these precautions before use.)
This manual classifies the safety precautions into two categories:
and .
Depending on the circumstances, procedures indicated by mayalso cause severe injury.It is important to follow all precautions for personal safety.
Associated Manuals
How to obtain manualsFor product manuals or documents, consult with the Mitsubishi Electric dealerfrom who you purchased your product.
Certification of UL, cUL standardsThe following product has UL and cUL certification.
UL, cUL File Number:E95239Models: MELSEC FX3U series manufacturedfrom December 1st, 2009 FX3U-2HC
Indicates that incorrect handling may cause hazardousconditions, resulting in death or severe injury.
Indicates that incorrect handling may cause hazardousconditions, resulting in medium or slight personal injuryor physical damage.
Manual name Manual No. Description
FX3U Series User’s Manual - Hardware Edition
JY997D16501MODEL CODE:
09R516
Explains the FX3U Series PLC specifications for I/O, wiring, installation, and maintenance.
FX3UC Series User’s Manual - Hardware Edition
JY997D28701MODEL CODE:
09R519
Explains the FX3UC Series PLC specifications for I/O, wiring, installation, and maintenance.
FX3S/FX3G/FX3GC/FX3U/FX3UC Series Programming Manual - Basic & Applied Instruction Edition
JY997D16601MODEL CODE:
09R517
Describes FX3S/FX3G/FX3GC/FX3U/FX3UC Series PLC programming for basic/applied instructions and devices.
MELSEC iQ-F FX5UUser's Manual(Hardware)
JY997D55301MODEL CODE:
09R536
Explains the FX5U PLC specifications for I/O, wiring, installation, and maintenance.
MELSEC iQ-F FX5UCUser's Manual(Hardware)
JY997D61401MODEL CODE:
09R558
Explains the FX5UC PLC specifications for I/O, wiring, installation, and maintenance.
Compliance with EC directive (CE Marking)This note does not guarantee that an entire mechanical module produced inaccordance with the contents of this note will comply with the following standards.Compliance to EMC directive and LVD directive for the entire mechanical moduleshould be checked by the user / manufacturer. For more details please contact thelocal Mitsubishi Electric sales site.
Requirement for Compliance with EMC directiveThe following products have shown compliance through direct testing (of the identifiedstandards below) and design analysis (through the creation of a technical constructionfile) to the European Directive for Electromagnetic Compatibility (2014/30/EU) whenused as directed by the appropriate documentation.
AttentionThis product is designed for use in industrial applications.
Type: Programmable Controller (Open Type Equipment)Models: MELSEC FX3U series manufacturedfrom December 1st, 2009 FX3U-2HC
Caution for EC Directive Installation in Enclosure
Programmable controllers are open-type devices that must be installed and usedwithin conductive control cabinets. Please use the programmable controller whileinstalled within a conductive shielded control cabinet. Please secure the cabinetdoor to the control cabinet (for conduction). Installation within a control cabinetgreatly affects the safety of the system and aids in shielding noise from theprogrammable controller.
1. Outline1.1 OutlineThe hardware high-speed counter block is a 2-channel high-speed counter. It is aspecial function block for the FX3U/FX3UC/FX5U/FX5UC PLC.
1.2 Major Features of the FX3U-2HC Differential-Line-Driver (AM26C31 or equivalent) and open collector output
encoders are available for the FX3U-2HC. The FX3U-2HC has two outputs per channel. When the counter value coincides with
an output compare value, the appropriate output is set ON. The output transistorsare individually isolated to allow either sink or source connection methods.
Various counter modes, such as 1-phase or 2-phase, 16-bit or 32-bit modes, can beselected using commands in the sequence program. Allow the FX3U-2HC unit torun only after setting these mode parameters.
1.3 Incorporated ItemsVerify that the following product and items are included in the package:
1.4 External Dimensions, Part Names, and Terminal Layout
Weigh: Approx. 0.2 kg (0.44 lbs)
Standard Remark
EN61131-2:2007Programmable controllers
- Equipment requirementsand tests
Compliance with all relevant aspects of the standard.EMI• Radiated Emission• Conducted EmissionEMS• Radiated electromagnetic field• Fast transient burst• Electrostatic discharge• High-energy surge• Voltage drops and interruptions• Conducted RF• Power frequency magnetic field
Included Items
FX3U-2HC 1 Unit
Special unit/block No. label 1 Sheet
Dust proof protection sheet 1 Sheet
Manuals [Japanese version] 1 manual
Manuals [English version] (This manual) 1 manual
87 (3.43")9 (0.36")
[1] [5]
55 (2.17")
[2] [3] [4]
80 (3
.15")
(mou
nting
hole
pitch
)
[9]
[8]
90 (3
.55"
)
4 (0.16")
Without top cover
[5]
[6][5]
2-φ4.5 mounting holes
[7]
2. Installation, Connect to the PLC
No. Name
[1] Direct mounting hole: 2 holes of 4.5 (0.18") (mounting screw: M4 screw)Used when attaching FX3U-2HC directly.
[2]Extension cable (PLC side)Used to connect this special function block to the FX3U/FX3UC main unit or anextension block.
[3] CH1 connector
[4] CH2 connector
[5]
Status LED (the upper side: CH1, the lower side: CH2)
POWER (Green)
Power LEDON when the 5V power supply isnormally supplied from the PLC.
UP (Red) Up count LED The respective LED is ON accordingto up/down count direction of thecounter.DOWN (Red) Down count LED
A (Red) A phase input LED The respective LED is ON (flicker)according to ON/OFF of A and Binput.B (Red) B phase input LED
DIS (Red) DISABLE input LED The respec t ive LED is ON/OFFaccording to ON/OFF of PRESET andDISABLE input.PRE (Red) PRESET input LED
YH1 (Red) YH1 output LED The respec t ive LED is ON/OFFaccording to status of YH1 and YH2output.YH2 (Red) YH2 output LED
[6] Top cover
[7]Extension connector (Extension side)Used to connect a FX3U extension block to the right of this special functionblock. Remove top cover for connecting.
[8] DIN rail mounting hook
[9] DIN rail mounting groove (DIN rail: DIN46277, 35mm (1.38") width)
INSTALLATION PRECAUTIONS
Make sure to cut off all phases of the power supply externally before attemptinginstallation or wiring work. Failure to do so may cause electric shock or damage to the product.
INSTALLATION PRECAUTIONS
Use the product within the generic environment specifications described in PLCmain unit manual.Never use the product in areas with excessive dust, oily smoke, conductive dusts,corrosive gas (salt air, Cl2, H2S, SO2, or NO2), flammable gas, vibration orimpacts, or expose it to high temperature, condensation, or rain and wind. If the product is used in such conditions, electric shock, fire, malfunctions,deterioration or damage may occur.
CH2
A24+
A5+
B24+
B5+
P24+
P5+
A12+
A-
B12+
B-
P12+
P-
XD24
YH1+
YH2+
XD5
COMD
YH1-
YH2-
Notch
CH1
A24+
A5+
B24+
B5+
P24+
P5+
A12+
A-
B12+
B-
P12+
P-
XD24
YH1+
YH2+
XD5
COMD
YH1-
YH2-
YH1 output
YH2 output
Notch
FX3U-2HC connector arrangement
Phase A
input
Phase B
input
PRESET
input
DISABLE
input
2.1 MountingThe product is mounted by the following method.
DIN rail mounting
Direct mounting (mounting screw: M4 screw)For further information on installation arrangements, refer to the following manuals.
Refer to the FX3U Series User's Manual - Hardware Edition.Refer to the FX3UC Series User's Manual - Hardware Edition.Refer to the MELSEC iQ-F FX5U User's Manual (Hardware).
Refer to the MELSEC iQ-F FX5UC User's Manual (Hardware).
2.1.1 DIN Rail MountingThe product can be mounted on a DIN rail(DIN46277, 35mm (1.38") width).
1) Fit the upper edge of the DIN rail mountinggroove (fig. A) onto the DIN rail.
2) Press the product against the DIN rail.
- An interval space of 1 to 2 mm (0.04" to 0.08") between each unit is necessary.
2.1.2 Direct Mounting (mounting screw: M4 screw)The product can be installed directly with screws.Refer to the External Dimensions (section 1.4) for the product’s mounting holepitch information. An interval space between each unit of 1 to 2 mm (0.04" to 0.08") is necessary.
2.2 Connection to the PLCA maximum of eight*1*2 FX3U-2HC(s) are connectable with the main unit or theright side of the powered extension unit/block. A unit number of No.0 to No.7 isassigned based on the order in which special function units/blocks are attached tothe main unit.For connection to an FX3UC Series PLC or FX2NC Series PLC extension block, anFX2NC-CNV-IF or FX3UC-1PS-5V is required.For connection to an FX5U or FX5UC PLC, an FX5-CNV-BUS or FX5-CNV-BUSCis required.
*1 Up to seven special function units/blocks in total can be connected to theFX3UC-32MT-LT(-2) PLC. Unit numbers assigned to special function units/blocks begins with No.1.
*2 Up to two special function units/blocks in total can be connected to theFX5U or FX5UC PLC. Unit numbers assigned to special function units/blocks begins with No.2.
For further information on installation arrangements, refer to the following manuals.Refer to the FX3U Series User's Manual - Hardware Edition.
Refer to the FX3UC Series User's Manual - Hardware Edition.Refer to the MELSEC iQ-F FX5U User's Manual (Hardware).
Refer to the MELSEC iQ-F FX5UC User's Manual (Hardware).
3. Wiring
INSTALLATION PRECAUTIONS
Do not touch the conductive parts of the product directly.Doing so may cause device failures or malfunctions.
Install the product on a flat surface.If the mounting surface is rough, undue force will be applied to the PC board,thereby causing nonconformities.
When drilling screw holes or wiring, make sure cutting or wire debris doesnot enter the ventilation slits.Failure to do so may cause fire, equipment failures or malfunctions.
Be sure to remove the dust proof sheet from the PLC's ventilation port wheninstallation work is completed.Failure to do so may cause fire, equipment failures or malfunctions.
Connect extension cables securely to their designated connectors.Loose connections may cause malfunctions.
WIRING PRECAUTIONS
Make sure to cut off all phases of the power supply externally beforeattempting installation or wiring work.Failure to do so may cause electric shock or damage to the product.
When drilling screw holes or wiring, make sure cutting or wire debris doesnot enter the ventilation slits. Failure to do so may cause fire, equipment failures or malfunctions.
1)
2)
A
3.1 Connection to input/output connectorThe input and output connectors conform to the MIL-C-83503.For the input and output connectors pin assignment, refer to section 1.4.1) Compliant connectors (commercially available connectors)
Use a 40-pin (1-key) socket connector conforming to MIL-C-83503.Confirm in advance that the connectors do not interfere with other partsincluding connector covers.
2) Connectors for user-made input/output cables (available from Mitsubishi)Users should provide electric wires and a pressure bonding tool.
3.2 WiringNote:Make sure to properly wire in accordance with the encoder output specifications. Incorrect wiring may cause accidents or damage to the product.
3.2.1 NPN output encoders
WIRING PRECAUTIONS
Make sure to observe the following precautions in order to prevent anydamage to the machinery or accidents due to abnormal data written to thePLC under the influence of noise:
1) Do not bundle the main circuit line together with or lay it close to the maincircuit, high-voltage line or load line. Otherwise, noise disturbance and/orsurge induction are likely to take place. As a guideline, lay the control line atleast 100mm (3.94") or more away from the main circuit or high-voltage lines.
2) Ground the shield wire or shield of the shielded cable at two points; on thePLC and the device on other end. However, do not use common groundingwith heavy electrical systems.
Model name and composition of input/output connector
Applicable electric wire (UL-1061 are recommended)
and tool
Our model name
Details of part (made by DDK Ltd.)
Electric wire size
Pressure bonding tool (made by DDK Ltd.)
FX-I/O-CON2-Sfor bulk wire(2-piece set)
Housing:HU-400S2-001Solderless contact:HU-411S
AWG22 (0.3mm2)
357J-5538
FX-I/O-CON2-SAfor bulk wire(2-piece set)
Housing:HU-400S2-001Solderless contact:HU-411SA
AWG20 (0.5mm2)
357J-13963
Encoder (NPN)
+24V
0V
24V DC*1
*1
PhaseZ
PhaseA
Class D
PRESET*3
DISABLE
A24+
A12+
A 5+
A -
3.3k
1.5k
0.2k
0.12k
XD24
XD 5
COMD
1.65k
0.47k
0.22k
*1
*1
Wiring of the B phase is the same as that of the A phase.
*1
*2*2
P24+
P12+
P 5+
P -
3.3k
1.5k
0.2k
0.12k
Class D
Class D
Class D Class D
Class D
FX3U
FX3UC
FX3U-2HC
*3
Shielded
Twisted-Pair
Shielded
Twisted-Pair
Shielded
Twisted-Pair
Drive power supply of the encoder.Use either 24V DC, 12V DC, or 5V DC according to the encoder type.When connecting the A phase, the B phase, and the Z phase to theFX3U-2HC, connect to the power supply terminal.When using 24V DC for PRESET or DISABLE signals, connect to the 24VDC (P24+, XD24) terminal
*1.
This wiring is unnecessary when not using the PRESET function or the
DISABLE function.
*2.
*3.
3.2.2 PNP output encoders
3.2.3 Differential-Line-Driver output encodersWhen applying the Differential-Line-Driver encoder (AM26C31 or equivalent) to theFX3U-2HC, connect the encoder output with the 5V DC terminal as shown in the figurebelow.
3.2.4 YH1, YH2 output wiring [Sink wiring]
CautionA protection fuse should be inserted at the output.Use a load power supply capacity that is at least 2 times larger than the total rated fuse capacity.
Class D
Encoder (PNP)
+24V
0V
24V DC
*1
PRESET *3
DISABLE*3
PhaseA
*1
*1
*1
*3.
*2. Wiring of the B phase is the same as that of the A phase.
A24+
A12+
A 5+
A -
3.3k
1.5k
0.2k
0.12k
*2 *2
Class D
XD24
XD 5
COMD
1.65k
0.47k
0.22k
P24+
P12+
P 5+
P -
3.3k
1.5k
0.2k
0.12k
Class D
Class D
Class D
Class D
FX3U
FX3UC
FX3U-2HC Shielded
Twisted-Pair
Shielded
Twisted-Pair
Shielded
Twisted-Pair
*1
PhaseZ
Drive power supply of the encoder.Use either 24V DC, 12V DC, or 5V DC according to the encoder type.When connecting the A phase, the B phase, and the Z phase to theFX3U-2HC, connect to the power supply terminal.When using 24V DC for PRESET or DISABLE signals, connect to the 24VDC (P24+, XD24) terminal.
*1.
This wiring is unnecessary when not using the PRESET function or the
DISABLE function.
Class D
Encoder
A 5+
A -
0.2k
0.12k
XD 5
COMD
0.47k
0.22k
+5V
0V
5V DC
LA
LAR
P 5+
P -
0.2k
0.12k
PRESET *2
Wiring of the B phase is the same as that of the A phase.
DISABLE *2
LZR
LZ
*1 *1
FX3U
FX3UC
FX3U-2HC
This wiring is unnecessary when not using the PRESET function or the
DISABLE function.
*1.
*2.
YH1+
YH1-
YH2+
YH2-
Fuse
FX3U-2HC
Output load driving
power, 5 - 24V DC
3.2.5 YH1, YH2 output wiring [Source wiring]
CautionA protection fuse should be inserted at the output.Use a load power supply capacity that is at least 2 times larger than the total rated fuse capacity.
3.3 GroundingGrounding should be performed as stated below.
The grounding resistance should be 100 or less. Independent grounding should be performed for best results.
When independent grounding is not performed, perform "shared grounding"of the following figure.
For details, refer to the FX3U Series User's Manual - Hardware Edition.For details, refer to the FX3UC Series User's Manual - Hardware Edition.For details, refer to the MELSEC iQ-F FX5U User's Manual (Hardware).
For details, refer to the MELSEC iQ-F FX5UC User's Manual (Hardware).
The grounding wire size should be AWG 22-20 (0.3-0.5 mm2). The grounding point should be close to the PLC, and all grounding wires
should be as short as possible.
4. Specifications
4.1 General SpecificationsThe general specifications are equivalent to the PLC main unit. (For general specifications, refer to the manual of the PLC main unit.)Caution
When a dielectric withstand test of this product is performed, ground all terminals of this product and the PLC unit.
4.2 Power Supply Specifications
DESIGN PRECAUTIONS
Make sure to have the following safety circuits outside of the PLC to ensure safesystem operation even during external power supply problems or PLC failure.Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protectioncircuit, an interlock circuit for opposite movements (such as normal vs.reverse rotation), and an interlock circuit (to prevent damage to theequipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timererror, during self-diagnosis, all outputs are turned off. Also, when an error thatcannot be detected by the PLC CPU occurs in an input/output control block,output control may be disabled. External circuits and mechanisms should be designed to ensure safemachinery operation in such a case.
3) Note that when an error occurs in a relay, triac or transistor output device, theoutput could be held either on or off.For output signals that may lead to serious accidents, external circuits andmechanisms should be designed to ensure safe machinery operation in sucha case.
DESIGN PRECAUTIONS
Do not bundle the control line together with or lay it close to the main circuit orpower line. As a guideline, lay the control line at least 100mm (3.94") or moreaway from the main circuit or power line.Noise may cause malfunctions.
Install module so that excessive force will not be applied to I/O connectors.Failure to do so may result in wire damage/breakage or PLC failure.
Item Specifications
Units driving power5V DC, 245mA (Internal power supply from main unitor extension power supply unit)
Allowable instantaneous power failure time
Operation can be continued upon occurrence ofinstantaneous power failure for 1 ms or less.
YH1+
YH1-
YH2+
YH2-Fuse
FX3U-2HC
Output loaddriving power,5 - 24V DC
PLCPLCPLCAnother
equipment
Shared groundingGood condition
Common groundingNot allowed
Independent groundingBest condition
Anotherequipment
Anotherequipment
4.3 Performance Specifications
4.4 Applicable PLC
*1 An FX2NC-CNV-IF or FX3UC-1PS-5V is necessary to connect the FX3U-2HC with the FX3UC PLC.
*2 An FX5-CNV-BUS or FX5-CNV-BUSC is necessary to connect the FX3U-2HC with the FX5U/FX5UC PLC.
*3 The version number can be checked by reading the last three digits ofdevice D8001/D8101.
Item Specification
Input signal
Signal level(Selected by terminal connec-tion)
Phase A,Phase B,PRESET
[A24+],[B24+],[P24+]
24V DC10%, 8mA or less
[A12+],[B12+],[P12+]
12V DC10%, 8mA or less
[A5+],[B5+],[P5+]
3.0V to 5.5V DC, 12.5mA or less
DISABLE
[XD24]10.8V to 26.4V DC, 15mA or less
[XD5]5V DC10%, 8mA or less
MAX. frequency
1-phaseinput
1 input
200kHz2 input
2 -phaseinput
1 edge count
2 edge count 100kHz
4 edge count 50kHz
Pulse shape
t1(ON/OFF pulse): 1.5s or more (at 200kHz)t2(Phase difference between A and B):
0.75s or more (at 200kHz)t3(Overlap time): 0.7s or more (at 200kHz)t4(Rise/fall time): 0.75s or lessPRESET(Z phase) input signal width:
ON width 1.5s or more,OFF width 30s or more
DISABLE (count prohibit) input signal width:ON width 100s or more,OFF width 100s or more
Count-ing spec-ification
Format
Automatic UP/DOWNHowever, when on 1-phase 1-input mode, UP/DOWN is determined by the following. Hardware UP/DOWN: Up/down count is decided
by OFF/ON of the A-phase input terminal. Software UP/DOWN: Up/down count is decided
by the current value (K0/K1) of BFM #1, #41.
Range
When 32-bit is specified: -2,147,483,648 to +2,147,483,647
When 16-bit is specified: 0 to 65,535 (upper limit is set up by BFM #3, #2, #43, #42.)
Compari-son Type
When the present value and the comparison setvalue of the counter are equal, the comparisonoutput is set (ON) within 30 ms and is cleared (OFF)within 100 ms by the reset command.
Output signal
Types of outputs
YH1+: transistor output forYH1 output
YH1-: transistor output forYH1 output
YH2+: transistor output forYH2 output
YH2-: transistor output for YH2 output
Output capacity
5V ~ 24V DC, 0.5A
I/O occupation 8 points (can be either inputs or outputs)
Model name Applicability
FX3U Series PLC Ver. 2.20 and later*3
FX3UC Series PLC*1 Ver. 2.20 and later*3
FX5U PLC*2 From first production
FX5UC PLC*2 From first production
t4 t4
t1 t1
t2 t3
YH1+,
YH2+
YH1-,
YH2-
FX3U-2HC
USER’S MANUAL
This manual describes the part names, dimensions, mounting, wiring, andspecifications of the product. Before use, read this manual and the manuals of allrelevant products fully to acquire proficiency in handling and operating the product.Make sure to learn all the product information, safety information, and precautions.Store this manual in a safe place so that it can be taken out and read whenevernecessary. Always forward it to the end user.Registration:The company names, system names and product names mentioned in this manualare either registered trademarks or trademarks of their respective companies.
In some cases, trademark symbols such as '' or '' are not specified in this manual.
Effective March 2019Specifications are subject to change without notice.
Manual Number JY997D36701
Revision E
Date March 2019
*1 In the following case, BFM #29 b7 turns on.
write in a BFM that is not used writing to read only BFMs accessing 32 bit BFMs using the FROM/TO command in the wrong order
Error status in the FX3U-2HC can be checked by reading the contents of b0 to b15of BFM #29 to auxiliary relays of the PLC.The error flag of b1 to b8 is reset-table with ON of BFM #4 b8. The error flag of b7,b8 and b10 to b15 is resettable with ON of BFM #44 b8. The error flags in BFM#29 can also be reset by writing 0 to it. The Hardware error flag (bit 9 of BFM #29)can not be cleared.5.2.12 Model identification code [BFM #30]This BFM stores the identification number for the FX3U-2HC.The identification number for the FX3U-2HC unit is K4020.By reading this identification number, the user may create built-in checkingroutines to check whether the physical position of the FX3U-2HC matches that ofthe software.
6. Example ProgramPlease use the following program as a guide whenever you use the FX3U-2HC unit.Other instructions to read the current value of the counter, status etc. can be addedas required.
Bit N0. Error Status
b8Set when the counter mode (BFM #0,#40) is written incorrectly. Except K0 to K11
b9 Hardware error (UP, DOWN LED turn ON)
b10Set when the value of the ring length iswritten incorrectly. (CH2)
Outside of K2 to K65,536 Written while CH2 is in
32-bit counter mode Ring length changed
while counter running
b11Set when the preset value is writtenincorrectly. (CH2)
Value is other than "K0 toring length-1" for 16-bitcounters.
b12 Set when the compare value is writtenincorrectly. (CH2)
b13 Set when the current value is writtenincorrectly. (CH2)
b14Set when the counter overflows the upperlimit. (CH2) When the upper or lower
limit is exceeded on a 32-bit counter.b15 Set when the counter underflows the
lower limit. (CH2)
K11K2 K0 K1
K1234K2 K2 K1
K1K2 K1 K1
M8002
Initialpulse K11 is written into BFM #0 (CH1) of special function block No.2.
The counter input is 16-bit 1-phase. Please use a pulse command for this initialization.
K1234 BFM #3, #2 (CH1) (special function block No.2)The ring length can be specified when a 16-bit counter is specified.
UP/DOWN direction should be specified for 1-phase 1-inputsoftware determined UP/DOWN counter.
FNC 79 TO
FNC 79DTO
FNC 79TO
K1000K2 K12 K1
K900K2 K14 K1
FNC 79DTO
FNC 79DTO
K1000 BFM #13, #12 (CH1)Set the compare value for YH1 output.
K900 BFM #15, #14 (CH1)Set the compare value for YH2 output(not necessary if only YH1 output is used).
~
M8000
M11 M13
Count allowed
Output allowed,Mutual reset
Preset allowed
Error flag reset
YH1 output reset
YH2 output reset
X010
M10
X011
M14
X012
PLS M18
X013
PLS M19
PLS M20
Counting only occurs if the count permit is set to ON. Also, outputs will not be set fromthe counting process at all if the relevant output prohibit is set in the command register.Please reset error flags and YH1/YH2 output before you start. The mutual reset andpreset initialization commands can be used as required.
The following programs are the examples of error processing.Error status in the FX3U-2HC can be checked by reading the contents of b0 to b15 ofBFM #29 to auxiliary relays of the PLC. These error flags are resettable BFM #4, #44 b8.
7. Preliminary checks1) Check that the I/O wiring and extension cable of the FX3U-2HC are properly
connected.2) The FX3U-2HC occupies 8 points of I/O on the FX3U, FX3UC expansion bus. The
8 points can be allocated from either inputs or outputs.5V DC 245mA power is supplied from the main or extension power supply unitsfor the FX3U-2HC. Check that there is no power overload from this and otherextension blocks.
3) The counter works correctly only when data such as the counter mode (set with apulse command), the TO command, the compare value, etc. are appropriatelyspecified. Remember to initialize the count (BFM #4, #44 b0), preset (BFM #4,#44 b4), and output (BFM #4, #44 b2, b1) prohibits. The YH1/YH2 outputs arereset during start.
Note: Inputting pulses higher than the maximum frequency may cause miscounting in theFX3U-2HC or a FROM/TO error in the PLC main unit.
8. Diagnostics
1) The following LEDs on the main panel of the FX3U-2HC may help you totroubleshoot the unit.
a) A, B:Goes on/off as A, B input turn ON/OFF. It can be checked by rotating theencoder slowly.
b) UP, DOWN:Lights up to indicate whether the counter is going up (UP) or down (DOWN).
c) PRE, DIS:The appropriate LED lights up when the PRESET (PRE) terminal or theDISABLE (DIS) terminal is ON.
d) YH1, YH2:The appropriate LED lights up when YH1/YH2 output is turned on.
2) You can check the error status by reading the content of BFM #29 to the PLC.For error contents, refer to the Subsection 5.2.11
STARTUP AND MAINTE-NANCE PRECAUTIONS
Do not disassemble or modify the PLC.Doing so may cause fire, equipment failures, or malfunctions.*For repair, contact your local Mitsubishi Electric representative.
Do not drop the product or exert strong impact to it.Doing so may cause damage.
DISPOSAL PRECAUTIONS
Please contact a certified electronic waste disposal company for theenvironmentally safe recycling and disposal of your device.
TRANSPORTATION AND STORAGE PRECAUTIONS
The product is a precision instrument. During transportation, avoid impacts largerthan those specified in the general specifications by using dedicated packagingboxes and shock-absorbing palettes. Failure to do so may cause failures in theproduct. After transportation, verify operation of the product and check fordamage of the mounting part, etc.
M8000K4M10K2 K4 K1
D2K2 K20 K1
RUNmonitor
FNC 79TO
FNC 78DFROM
M25 to M10 BFM #4 (b15 to b0) command (CH1)
BFM #21, #20 Reads the current value to the data registers D3 and D2. (CH1)
K4M100K2 K29 K1
K4M10K2 K4 K1
M8000
X004
M100
M18 Error flag reset
Y10 Error occurrence (BFM#29 b1 to b15 turn on)
M109
Y12 Hardware error occurrence
M108
Y11 Mode setting error occurrence
M8000
BFM #4 (CH1)
command write
FNC 78
FROM
FNC 79
TO
9. Reference (CH1 System Block Diagram)
TO
DISABLE
PRESET
Direct initialization
Count start
16/32-bit Counter
for YH1 output
Ma
Count pulse
TO
TO
TO
Counter mode
Counter mode BFM #01-phase1-inputcounter
DOWN/UP command BFM #1
16 bit mode32 bit mode
Count permit BFM #4 b0
Preset permit BFM #4 b4
Direct initializationTO
for YH2 output
Ma
TO
DISABLE
PRESET
YH1
YH2
Preset dataBFM #11,#10
Current value registerBFM #21,#20
Maximum value BFM #23,#22Minimum value BFM #25,#24
Comparision dataBFM #15,#14
C
Comparison dataBFM #13,#12
CH1 Error statusBFM #29 b0 to b8
H/WDOWN/UP
S/WDOWN/UP
Ring length upper limit valueBFM #3,#2
*1 The mutual reset action becomes valid only when both the YH1 comparison output and
BA
Z
Output occurs when the current value becomes equal to the compare value butonly if b1 and b2 of BFM #4, #44 are ON. Once an output is set, it remains ONuntil it is reset by b9 or b10 of BFM #4, #44.
If b3 of BFM #4, #44 is ON, however, one of the outputs is reset when the other is set.(refer to the following figure)
YH1/YH2 output
Current valueYH1/YH2
compare value
BFM #4,#44
b9,b10:ON
BFM #4,#44
b9,b10:ON
YH1 compare value
YH2 compare valueCurrent value
YH1 output
YH2 output
5. Buffer Memories (BFM)5.1 Buffer memory ListNote:1) When writing to BFM #0 (CH1 counter mode), BFM #1 to #27 and #29 bit1 to
6 will be initialized. When writing to BFM #40 (CH2 counter mode), BFM #41to #67 and #29 bit10 to 15 will be initialized.When setting the counter mode, use a TOP (pulsed) instruction, or M8002(initial pulse) to drive the TO instruction. (The continuous operation typecannot be used.)
2) Read/Write of 16 bit dataWhen using a positive value between K32,768 and K65,535 with 16 bitcounters, read/writes of data, such as the current value, ring length, presetdata, YH1/YH2 compare value, maximum count value and the minimumcount value should use the 32-bit forms of FROM/TO instructions ((D)FROM, (D) TO).
3) Read/write of 32 bit dataThe usage of a 32-bit FROM/TO instruction is recommended. In the event that a 16-bit FROM/TO instruction is used, the following casesneed to be considered. If the writing order is low word first and then high word, the 32 bit data will
be written normally. Data becomes valid after both low and high words arewritten.
In the event that data is not written in the order low word first and then highword, the error bit b7 of BFM #29 turns ON.
5.2 Details of buffer memories
5.2.1 Counter mode [BFM #0 (CH1), #40 (CH2)]The counter mode is shown in the upper right table. (Default value: K0)
Note:When writing to BFM #0 (CH1 counter mode), BFM #1 to #27 and #29 bit1 to 6 willbe initialized. When writing to BFM #40 (CH2 counter mode), BFM #41 to #67 and#29 bit10 to 15 will be initialized. Please perform the setting of other BFM(s) afterthe setting of the counter mode (BFM #0, #40).When setting the counter mode, use a TOP (pulsed) instruction, or M8002 (initialpulse) to drive the TO instruction. (The continuous operation type cannot be used.)
BFM #Description Default
BFMAccessCH1 CH2
BFM #0 BFM #40Counter mode (Setting range: K0 to K11)
K0 R/W
BFM #1 BFM #41DOWN/UP command (1-phase 1-input mode [S/W UP/DOWN] only)
K0 R/W
BFM #2 BFM #42Ring length
LowerK65536
R/W
BFM #3 BFM #43 Upper R/W
BFM #4 BFM #44 Command K0 R/W
BFM #5~ #9
BFM #45~ #49
Not used - -
BFM #10 BFM #50Preset data
LowerK0
R/W
BFM #11 BFM #51 Upper R/W
BFM #12 BFM #52YH1 compare value
LowerK32767
R/W
BFM #13 BFM #53 Upper R/W
BFM #14 BFM #54YH2 compare value
LowerK32767
R/W
BFM #15 BFM #55 Upper R/W
BFM #16~ #19
BFM #56~ #59
Not used - -
BFM #20 BFM #60Counter current value
LowerK0
R/W
BFM #21 BFM #61 Upper R/W
BFM #22 BFM #62Maximum count value
LowerK0
R/W
BFM #23 BFM #63 Upper R/W
BFM #24 BFM #64Minimum count value
LowerK0
R/W
BFM #25 BFM #65 Upper R/W
BFM #26 BFM #66 Compare results - R
BFM #27 BFM #67 Terminal status - R
BFM #28 Not used - -
BFM #29 Error status - R
BFM #30 Model identification code: K4020 K4020 R
BFM #31 ~ 39 Not used - -
BFM #68 ~ 32767 Not used - -
1) 16/32-bit counter modesa) 32-bit counter modes
Modes: K0, K2, K4, K6, K8, K10A 32-bit binary counter which executes UP/DOWN counting will change from the lowerlimit value to the upper limit value or theupper limit value to the lower limit valuewhen overflow occurs. Both the upper andlower limit values are fixed values: the upperlimit value is +2,147,483,647, and the lowerlimit value is -2,147,483,648.
b) 16-bit counter modes Modes: K1, K3, K5, K7, K9, K11A 16-bit binary counter handles only positivevalues from 0 to 65,535. Changes to zerofrom the upper limit value or to the upperlimit value from zero when overflow occurs;the upper limit value is determined by BFMs#3 and #2 (CH1), #43 and #42 (CH2).
2) 2-phase counter [1 edge-count] (K0, K1)
3) 2-phase counter [2 edge-count] (K2, K3)
4) 2-phase counter [4 edge-count] (K4, K5)
5) 1-phase 2-input counter (K6, K7)
6) 1-phase 1-input counter [Hardware UP/DOWN] (K8, K9)
7) 1-phase 1-input counter [Software UP/DOWN] (K10, K11)
Count modes 32 bits 16 bits Reference
2-phase input (phase difference pulse)
1 edge count K0 K1 1), 2)
2 edge count K2 K3 1), 3)
4 edge count K4 K5 1), 4)
1-phase 2-input (add/subtract pulse) K6 K7 1), 5)
1-phase 1-input
Hardware UP/DOWN K8 K9 1), 6)
Software UP/DOWN K10 K11 1), 7)
0
+2,147,483,647
Upper limit value
Lower limit value
-2,147,483,648
0
Ring lengthCH1 : (BFM #3, #2) -1CH2 : (BFM #43, #42) -1
Phase A
Phase B
+1+1 -1-1
Phase B input OFF →
ON while phase A input
ON Count up by 1.
Phase B input ON →
OFF while phase A input
ON Count down by 1.
Phase A
Phase B
+1+1 -1-1
Phase B input OFF →
ON (ON → OFF) while
phase A input ON (OFF)
Count up by 1.
Phase B input ON →
OFF (OFF → ON) while
phase A input ON (OFF)
Count down by 1.
DOWN COUNT
Phase A
Phase B
UP COUNT
+1+1 +1+1 -1-1 -1-1
Phase A
Phase B
ON
OFF 1 04 23321
ON
OFF
Phase A input-1
at OFF → ON
Phase B input+1
at OFF → ON
Phase A
Phase B
Currentvalue
UP DOWN
ONOFF
ON
OFF
UP/DOWN is
determined by input
phase A (ON/OFF).
BFM #1, #41
Phase B
UPDOWN
K1K0
ON
OFF
Currentvalue
UP/DOWN is determined
by the contents of
BFM #1, #41 (K0/K1).
5.2.2 DOWN/UP command [BFM #1 (CH1), #41 (CH2)]When using the 1-phase 1-input counter [Software UP/DOWN] (counter mode: K10,K11), set the count direction by the current value of BFM #1 or BFM #41. (Defaultvalue: K0)
For the operation, refer to the Subsection 5.2.1 7)
5.2.3 Ring length [BFM #3, #2 (CH1), #43, #42 (CH2)]When setting the upper limit value of the 16 bit counters, the setting range is K2 toK65536. (Default value: K65536) Please use the DTO instruction and write data as 32 bit data.When ring length K100 is specified, the current value of the counter is changed asshown the following figure, and the upper limit value is set to 99.
5.2.4 Command [BFM #4 (CH1), #44 (CH2)]
Count Direction Setting Value
Up count K0
Down count K1
Bit No.Setting Value
OFF (0) ON (1)
b0*1 Count prohibit Count permit
b1*2 YH1 compared output prohibit YH1 compared output permit
b2*3 YH2 compared output prohibit YH2 compared output permit
b3*4 YH1/YH2 independent action Mutual reset action
b4*5 Preset prohibit Preset permit
UP9998 0 1
DOWN1 0 9899
*1 When b0 is set to ON and the DISABLE input terminal to OFF, the counter ispermitted to start counting input pulses.
*2 Unless b1 is set to ON, YH1 (compared output) does not turn ON.
*3 Unless b2 is set to ON, YH2 (compared output) does not turn ON.
*4 When b3=ON, YH2 output is reset if YH1 output is set, and YH1 output is reset ifYH2 output is set. When b3=OFF, YH1 and YH2 output act independently, anddo not reset each other.The mutual reset action becomes valid only when both the YH1 comparisonoutput and the YH2 comparison output are permitted (b1, b2=ON).
*5 When b4=OFF, the preset function using the PRESET input terminal is disabled.
*6 When bit 5 is set to ON, the counter will be stopped and reset and the outputsYH1 and YH2 will be switched OFF when the PLC is set from RUN to STOP.
*7 When bit 8 in BFM #4 is set to ON, the error flags bit 1 to 6 in BFM #29 will bereset. The shared error flags (bit 7 and bit 8) will also be reset if no error on theother counter channel requires them to remain ON. When bit 8 in BFM #44 is setto ON, the error flags bit 10 to 15 in BFM #29 will be reset. The shared error flags(bit 7 and bit 8) will also be reset if no error on the other counter channel requiresthem to remain ON. After clearing BFM #29 error flags this flag will be resetautomatically.
*8 b9 to b12 can perform a forced set of the YH1 output or the YH2 output, andreset.The output is not changed when the forced set and reset are performedsimultaneously.
5.2.5 Preset data [BFM #11, #10 (CH1), #51, #50 (CH2)]When BFM #4, #44 b4 is ON and the PRESET input is switched from OFF to ON,preset data is stored in BFM #21, #20 (CH1) #61, #60 (CH2) (counter current value).
5.2.6 YH1 compare value [BFM #13, #12 (CH1), #53, #52 (CH2)], YH2 compare value [BFM #15, #14 (CH1), #55, #54 (CH2)]
The comparison set value for the output currently written here and the present valueof the counter are measured, and when the comparison result is equal, the YH1output or the YH2 output is set to ON within 30 s.
b5*6No action if PLC is set from RUN
to STOP(FX2N-1HC compatibility mode)
Counter is stopped and reset if PLC is set from RUN to STOP
b6, b7 Not used
b8*7 No action Error flag reset
b9*8 No action YH1 output reset
b10*8 No action YH2 output reset
b11*8 No action YH1 output set
b12*8 No action YH2 output set
b13 ~ b15 Not used
5.2.7 Counter current value [BFM #21, #20 (CH1), #61, #60 (CH2)]The current value of the counter can be read by the PLC. It will not be an accuratevalue during high-speed operations because of the communication delay. Thecurrent value of the counter can be forcibly changed by writing a 32-bit value intothe appropriate BFMs from the PLC.
5.2.8 Maximum count value [BFM #23, #22 (CH1), #63, #62 (CH2)],Minimum count value [BFM #25, # 24 (CH1), #65, #64 (CH2)]
These BFM store the maximum and minimum value reached by the counter. If thepower is turned off, the stored data is cleared. Any value written to maximum andminimum count value in 16 bit counter mode which is exceeding the valid range (0 <= value < ring length) will be automatically adjusted. Values < 0 will beadjusted to 0, values >= ring length will be adjusted to "ring length" - 1.
5.2.9 Compare results [BFM #26 (CH1), #66 (CH2)]
5.2.10 Terminal status [BFM #27 (CH1), #67 (CH2)]
5.2.11 Error status [BFM #29]
Bit No.Target output
OFF (0) ON (1)
b0
YH1
Compare value current value Compare value current value
b1 Compare value current value Compare value current value
b2 Compare value current value Compare value current value
b3
YH2
Compare value current value Compare value current value
b4 Compare value current value Compare value current value
b5 Compare value current value Compare value current value
b6 ~ b15 Not used
Bit N0. Signal Name OFF (0) ON (1)
b0 PRESET input OFF ON
b1 DISABLE input OFF ON
b2 YH1 output OFF ON
b3 YH2 output OFF ON
b4 ~ b15 Not used
Bit N0. Error Status
b0 Set when any of b1 to b15 is ON.
b1Set when the value of the ring length iswritten incorrectly. (CH1)
Outside of K2 to K65,536 Written while CH1 is in
32-bit counter mode Ring length changed
while counter running
b2Set when the preset value is writtenincorrectly. (CH1)
Value is other than "K0 to ringlength-1" for 16-bit counters.
b3 Set when the compare value is writtenincorrectly. (CH1) Value is other than "K0 to ring
length-1" for 16-bit counters.b4 Set when the current value is written
incorrectly. (CH1)
b5Set when the counter overflows theupper limit. (CH1) When the upper or lower limit
i s exceeded on a 32 -b i tcounter.b6 Set when the counter underflows the
lower limit. (CH1)
b7 Set when the FROM/TO command is used incorrectly.*1
This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.
WarrantyExclusion of loss in opportunity and secondary loss from warranty liabilityRegardless of the gratis warranty term, Mitsubishi shall not be liable for compensation to:(1) Damages caused by any cause found not to be the responsibility of Mitsubishi.(2) Loss in opportunity, lost profits incurred to the user by Failures of Mitsubishi products.(3) Special damages and secondary damages whether foreseeable or not, compensation for
accidents, and compensation for damages to products other than Mitsubishi products.(4) Replacement by the user, maintenance of on-site equipment, start-up test run
and other tasks.
For safe useThis product has been manufactured as a general-purpose part for general industries, and has not been designed or manufactured to be incorporated in a device or system used in purposes related to human life.Before using the product for special purposes such as nuclear power, electric power, aerospace, medicine or passenger movement vehicles, consult with Mitsubishi Electric.This product has been manufactured under strict quality control. However when installing the product where major accidents or losses could occur if the product fails, install appropriate backup or failsafe functions in the system.
•
•
•
HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
S YH1tched
R
S
R
YH2tched
: Module input/output
: Buffer memory
Terminal statusBFM #27
YH2 output resetBFM #4 b10
Mutual reset actionBFM #4 b3YH2 compared output
BFM #4 b2
YH2 output setBFM #4 b12
ompare resultsBFM #26
YH1 output resetBFM #4 b9
YH1 output setBFM #4 b11
YH1 compared outputBFM#4 b1
CH1 Error flag resetBFM #4 b8
the YH2 comparison output are permitted (BFM #4 b1, b2=ON).
*1
This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.
WarrantyExclusion of loss in opportunity and secondary loss from warranty liabilityRegardless of the gratis warranty term, Mitsubishi shall not be liable for compensation to:(1) Damages caused by any cause found not to be the responsibility of Mitsubishi.(2) Loss in opportunity, lost profits incurred to the user by Failures of Mitsubishi products.(3) Special damages and secondary damages whether foreseeable or not, compensation for
accidents, and compensation for damages to products other than Mitsubishi products.(4) Replacement by the user, maintenance of on-site equipment, start-up test run
and other tasks.
For safe useThis product has been manufactured as a general-purpose part for general industries, and has not been designed or manufactured to be incorporated in a device or system used in purposes related to human life.Before using the product for special purposes such as nuclear power, electric power, aerospace, medicine or passenger movement vehicles, consult with Mitsubishi Electric.This product has been manufactured under strict quality control. However when installing the product where major accidents or losses could occur if the product fails, install appropriate backup or failsafe functions in the system.
•
•
•
HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
9. Reference (CH1 System Block Diagram)
TO
DISABLE
PRESET
S YH1
Direct initialization
Count start
16/32-bit Counter
for YH1 output
Matched
Count pulse
TO
TO
TO
Counter mode
Counter mode BFM #01-phase1-inputcounter
DOWN/UP command BFM #1
16 bit mode32 bit mode
Count permit BFM #4 b0
Preset permit BFM #4 b4
Direct initializationTO
R
S
R
YH2
for YH2 output
Matched
TO
DISABLE
PRESET
YH1
YH2
: Module input/output
: Buffer memory
Preset dataBFM #11,#10
Current value registerBFM #21,#20
Maximum value BFM #23,#22Minimum value BFM #25,#24
Terminal statusBFM #27
YH2 output resetBFM #4 b10
Mutual reset actionBFM #4 b3YH2 compared output
BFM #4 b2
YH2 output setBFM #4 b12
Comparision dataBFM #15,#14
Compare resultsBFM #26
Comparison dataBFM #13,#12
YH1 output resetBFM #4 b9
YH1 output setBFM #4 b11
YH1 compared outputBFM#4 b1
CH1 Error flag resetBFM #4 b8
CH1 Error statusBFM #29 b0 to b8
H/WDOWN/UP
S/WDOWN/UP
Ring length upper limit valueBFM #3,#2
*1 The mutual reset action becomes valid only when both the YH1 comparison output and the YH2 comparison output are permitted (BFM #4 b1, b2=ON).
*1
BA
Z
5. Buffer Memories (BFM)5.1 Buffer memory ListNote:1) When writing to BFM #0 (CH1 counter mode), BFM #1 to #27 and #29 bit1 to
6 will be initialized. When writing to BFM #40 (CH2 counter mode), BFM #41to #67 and #29 bit10 to 15 will be initialized.When setting the counter mode, use a TOP (pulsed) instruction, or M8002(initial pulse) to drive the TO instruction. (The continuous operation typecannot be used.)
2) Read/Write of 16 bit dataWhen using a positive value between K32,768 and K65,535 with 16 bitcounters, read/writes of data, such as the current value, ring length, presetdata, YH1/YH2 compare value, maximum count value and the minimumcount value should use the 32-bit forms of FROM/TO instructions ((D)FROM, (D) TO).
3) Read/write of 32 bit dataThe usage of a 32-bit FROM/TO instruction is recommended. In the event that a 16-bit FROM/TO instruction is used, the following casesneed to be considered. If the writing order is low word first and then high word, the 32 bit data will
be written normally. Data becomes valid after both low and high words arewritten.
In the event that data is not written in the order low word first and then highword, the error bit b7 of BFM #29 turns ON.
5.2 Details of buffer memories
5.2.1 Counter mode [BFM #0 (CH1), #40 (CH2)]The counter mode is shown in the upper right table. (Default value: K0)
Note:When writing to BFM #0 (CH1 counter mode), BFM #1 to #27 and #29 bit1 to 6 willbe initialized. When writing to BFM #40 (CH2 counter mode), BFM #41 to #67 and#29 bit10 to 15 will be initialized. Please perform the setting of other BFM(s) afterthe setting of the counter mode (BFM #0, #40).When setting the counter mode, use a TOP (pulsed) instruction, or M8002 (initialpulse) to drive the TO instruction. (The continuous operation type cannot be used.)
BFM #Description Default
BFMAccessCH1 CH2
BFM #0 BFM #40Counter mode (Setting range: K0 to K11)
K0 R/W
BFM #1 BFM #41DOWN/UP command (1-phase 1-input mode [S/W UP/DOWN] only)
K0 R/W
BFM #2 BFM #42Ring length
LowerK65536
R/W
BFM #3 BFM #43 Upper R/W
BFM #4 BFM #44 Command K0 R/W
BFM #5~ #9
BFM #45~ #49
Not used - -
BFM #10 BFM #50Preset data
LowerK0
R/W
BFM #11 BFM #51 Upper R/W
BFM #12 BFM #52YH1 compare value
LowerK32767
R/W
BFM #13 BFM #53 Upper R/W
BFM #14 BFM #54YH2 compare value
LowerK32767
R/W
BFM #15 BFM #55 Upper R/W
BFM #16~ #19
BFM #56~ #59
Not used - -
BFM #20 BFM #60Counter current value
LowerK0
R/W
BFM #21 BFM #61 Upper R/W
BFM #22 BFM #62Maximum count value
LowerK0
R/W
BFM #23 BFM #63 Upper R/W
BFM #24 BFM #64Minimum count value
LowerK0
R/W
BFM #25 BFM #65 Upper R/W
BFM #26 BFM #66 Compare results - R
BFM #27 BFM #67 Terminal status - R
BFM #28 Not used - -
BFM #29 Error status - R
BFM #30 Model identification code: K4020 K4020 R
BFM #31 ~ 39 Not used - -
BFM #68 ~ 32767 Not used - -
1) 16/32-bit counter modesa) 32-bit counter modes
Modes: K0, K2, K4, K6, K8, K10A 32-bit binary counter which executes UP/DOWN counting will change from the lowerlimit value to the upper limit value or theupper limit value to the lower limit valuewhen overflow occurs. Both the upper andlower limit values are fixed values: the upperlimit value is +2,147,483,647, and the lowerlimit value is -2,147,483,648.
b) 16-bit counter modes Modes: K1, K3, K5, K7, K9, K11A 16-bit binary counter handles only positivevalues from 0 to 65,535. Changes to zerofrom the upper limit value or to the upperlimit value from zero when overflow occurs;the upper limit value is determined by BFMs#3 and #2 (CH1), #43 and #42 (CH2).
2) 2-phase counter [1 edge-count] (K0, K1)
3) 2-phase counter [2 edge-count] (K2, K3)
4) 2-phase counter [4 edge-count] (K4, K5)
5) 1-phase 2-input counter (K6, K7)
6) 1-phase 1-input counter [Hardware UP/DOWN] (K8, K9)
7) 1-phase 1-input counter [Software UP/DOWN] (K10, K11)
Count modes 32 bits 16 bits Reference
2-phase input (phase difference pulse)
1 edge count K0 K1 1), 2)
2 edge count K2 K3 1), 3)
4 edge count K4 K5 1), 4)
1-phase 2-input (add/subtract pulse) K6 K7 1), 5)
1-phase 1-input
Hardware UP/DOWN K8 K9 1), 6)
Software UP/DOWN K10 K11 1), 7)
0
+2,147,483,647
Upper limit value
Lower limit value
-2,147,483,648
0
Ring lengthCH1 : (BFM #3, #2) -1CH2 : (BFM #43, #42) -1
Phase A
Phase B
+1+1 -1-1
Phase B input OFF →
ON while phase A input
ON Count up by 1.
Phase B input ON →
OFF while phase A input
ON Count down by 1.
Phase A
Phase B
+1+1 -1-1
Phase B input OFF →
ON (ON → OFF) while
phase A input ON (OFF)
Count up by 1.
Phase B input ON →
OFF (OFF → ON) while
phase A input ON (OFF)
Count down by 1.
DOWN COUNT
Phase A
Phase B
UP COUNT
+1+1 +1+1 -1-1 -1-1
Phase A
Phase B
ON
OFF 1 04 23321
ON
OFF
Phase A input-1
at OFF → ON
Phase B input+1
at OFF → ON
Phase A
Phase B
Currentvalue
UP DOWN
ONOFF
ON
OFF
UP/DOWN is
determined by input
phase A (ON/OFF).
BFM #1, #41
Phase B
UPDOWN
K1K0
ON
OFF
Currentvalue
UP/DOWN is determined
by the contents of
BFM #1, #41 (K0/K1).
5.2.2 DOWN/UP command [BFM #1 (CH1), #41 (CH2)]When using the 1-phase 1-input counter [Software UP/DOWN] (counter mode: K10,K11), set the count direction by the current value of BFM #1 or BFM #41. (Defaultvalue: K0)
For the operation, refer to the Subsection 5.2.1 7)
5.2.3 Ring length [BFM #3, #2 (CH1), #43, #42 (CH2)]When setting the upper limit value of the 16 bit counters, the setting range is K2 toK65536. (Default value: K65536) Please use the DTO instruction and write data as 32 bit data.When ring length K100 is specified, the current value of the counter is changed asshown the following figure, and the upper limit value is set to 99.
5.2.4 Command [BFM #4 (CH1), #44 (CH2)]
*1 When b0 is set to ON and the DISABLE input terminal to OFF, the counter ispermitted to start counting input pulses.
*2 Unless b1 is set to ON, YH1 (compared output) does not turn ON.
*3 Unless b2 is set to ON, YH2 (compared output) does not turn ON.
*4 When b3=ON, YH2 output is reset if YH1 output is set, and YH1 output is reset ifYH2 output is set. When b3=OFF, YH1 and YH2 output act independently, anddo not reset each other.The mutual reset action becomes valid only when both the YH1 comparisonoutput and the YH2 comparison output are permitted (b1, b2=ON).
*5 When b4=OFF, the preset function using the PRESET input terminal is disabled.
*6 When bit 5 is set to ON, the counter will be stopped and reset and the outputsYH1 and YH2 will be switched OFF when the PLC is set from RUN to STOP.
*7 When bit 8 in BFM #4 is set to ON, the error flags bit 1 to 6 in BFM #29 will bereset. The shared error flags (bit 7 and bit 8) will also be reset if no error on theother counter channel requires them to remain ON. When bit 8 in BFM #44 is setto ON, the error flags bit 10 to 15 in BFM #29 will be reset. The shared error flags(bit 7 and bit 8) will also be reset if no error on the other counter channel requiresthem to remain ON. After clearing BFM #29 error flags this flag will be resetautomatically.
*8 b9 to b12 can perform a forced set of the YH1 output or the YH2 output, andreset.The output is not changed when the forced set and reset are performedsimultaneously.
5.2.5 Preset data [BFM #11, #10 (CH1), #51, #50 (CH2)]When BFM #4, #44 b4 is ON and the PRESET input is switched from OFF to ON,preset data is stored in BFM #21, #20 (CH1) #61, #60 (CH2) (counter current value).
5.2.6 YH1 compare value [BFM #13, #12 (CH1), #53, #52 (CH2)], YH2 compare value [BFM #15, #14 (CH1), #55, #54 (CH2)]
The comparison set value for the output currently written here and the present valueof the counter are measured, and when the comparison result is equal, the YH1output or the YH2 output is set to ON within 30 s.
Count Direction Setting Value
Up count K0
Down count K1
Bit No.Setting Value
OFF (0) ON (1)
b0*1 Count prohibit Count permit
b1*2 YH1 compared output prohibit YH1 compared output permit
b2*3 YH2 compared output prohibit YH2 compared output permit
b3*4 YH1/YH2 independent action Mutual reset action
b4*5 Preset prohibit Preset permit
b5*6No action if PLC is set from RUN
to STOP(FX2N-1HC compatibility mode)
Counter is stopped and reset if PLC is set from RUN to STOP
b6, b7 Not used
b8*7 No action Error flag reset
b9*8 No action YH1 output reset
b10*8 No action YH2 output reset
b11*8 No action YH1 output set
b12*8 No action YH2 output set
b13 ~ b15 Not used
UP9998 0 1
DOWN1 0 9899
Output occurs when the current value becomes equal to the compare value butonly if b1 and b2 of BFM #4, #44 are ON. Once an output is set, it remains ONuntil it is reset by b9 or b10 of BFM #4, #44.
If b3 of BFM #4, #44 is ON, however, one of the outputs is reset when the other is set.(refer to the following figure)
5.2.7 Counter current value [BFM #21, #20 (CH1), #61, #60 (CH2)]The current value of the counter can be read by the PLC. It will not be an accuratevalue during high-speed operations because of the communication delay. Thecurrent value of the counter can be forcibly changed by writing a 32-bit value intothe appropriate BFMs from the PLC.
5.2.8 Maximum count value [BFM #23, #22 (CH1), #63, #62 (CH2)],Minimum count value [BFM #25, # 24 (CH1), #65, #64 (CH2)]
These BFM store the maximum and minimum value reached by the counter. If thepower is turned off, the stored data is cleared. Any value written to maximum andminimum count value in 16 bit counter mode which is exceeding the valid range (0 <= value < ring length) will be automatically adjusted. Values < 0 will beadjusted to 0, values >= ring length will be adjusted to "ring length" - 1.
5.2.9 Compare results [BFM #26 (CH1), #66 (CH2)]
5.2.10 Terminal status [BFM #27 (CH1), #67 (CH2)]
5.2.11 Error status [BFM #29]
Bit No.Target output
OFF (0) ON (1)
b0
YH1
Compare value current value Compare value current value
b1 Compare value current value Compare value current value
b2 Compare value current value Compare value current value
b3
YH2
Compare value current value Compare value current value
b4 Compare value current value Compare value current value
b5 Compare value current value Compare value current value
b6 ~ b15 Not used
Bit N0. Signal Name OFF (0) ON (1)
b0 PRESET input OFF ON
b1 DISABLE input OFF ON
b2 YH1 output OFF ON
b3 YH2 output OFF ON
b4 ~ b15 Not used
Bit N0. Error Status
b0 Set when any of b1 to b15 is ON.
b1Set when the value of the ring length iswritten incorrectly. (CH1)
Outside of K2 to K65,536 Written while CH1 is in
32-bit counter mode Ring length changed
while counter running
b2Set when the preset value is writtenincorrectly. (CH1)
Value is other than "K0 to ringlength-1" for 16-bit counters.
b3 Set when the compare value is writtenincorrectly. (CH1) Value is other than "K0 to ring
length-1" for 16-bit counters.b4 Set when the current value is written
incorrectly. (CH1)
b5Set when the counter overflows theupper limit. (CH1) When the upper or lower limit
i s exceeded on a 32 -b i tcounter.b6 Set when the counter underflows the
lower limit. (CH1)
b7 Set when the FROM/TO command is used incorrectly.*1
YH1/YH2 output
Current valueYH1/YH2
compare value
BFM #4,#44
b9,b10:ON
BFM #4,#44
b9,b10:ON
YH1 compare value
YH2 compare valueCurrent value
YH1 output
YH2 output
*1 In the following case, BFM #29 b7 turns on.
write in a BFM that is not used writing to read only BFMs accessing 32 bit BFMs using the FROM/TO command in the wrong order
Error status in the FX3U-2HC can be checked by reading the contents of b0 to b15of BFM #29 to auxiliary relays of the PLC.The error flag of b1 to b8 is reset-table with ON of BFM #4 b8. The error flag of b7,b8 and b10 to b15 is resettable with ON of BFM #44 b8. The error flags in BFM#29 can also be reset by writing 0 to it. The Hardware error flag (bit 9 of BFM #29)can not be cleared.5.2.12 Model identification code [BFM #30]This BFM stores the identification number for the FX3U-2HC.The identification number for the FX3U-2HC unit is K4020.By reading this identification number, the user may create built-in checkingroutines to check whether the physical position of the FX3U-2HC matches that ofthe software.
6. Example ProgramPlease use the following program as a guide whenever you use the FX3U-2HC unit.Other instructions to read the current value of the counter, status etc. can be addedas required.
Bit N0. Error Status
b8Set when the counter mode (BFM #0,#40) is written incorrectly. Except K0 to K11
b9 Hardware error (UP, DOWN LED turn ON)
b10Set when the value of the ring length iswritten incorrectly. (CH2)
Outside of K2 to K65,536 Written while CH2 is in
32-bit counter mode Ring length changed
while counter running
b11Set when the preset value is writtenincorrectly. (CH2)
Value is other than "K0 toring length-1" for 16-bitcounters.
b12 Set when the compare value is writtenincorrectly. (CH2)
b13 Set when the current value is writtenincorrectly. (CH2)
b14Set when the counter overflows the upperlimit. (CH2) When the upper or lower
limit is exceeded on a 32-bit counter.b15 Set when the counter underflows the
lower limit. (CH2)
K11K2 K0 K1
K1234K2 K2 K1
K1K2 K1 K1
M8002
Initialpulse K11 is written into BFM #0 (CH1) of special function block No.2.
The counter input is 16-bit 1-phase. Please use a pulse command for this initialization.
K1234 BFM #3, #2 (CH1) (special function block No.2)The ring length can be specified when a 16-bit counter is specified.
UP/DOWN direction should be specified for 1-phase 1-inputsoftware determined UP/DOWN counter.
FNC 79 TO
FNC 79DTO
FNC 79TO
K1000K2 K12 K1
K900K2 K14 K1
FNC 79DTO
FNC 79DTO
K1000 BFM #13, #12 (CH1)Set the compare value for YH1 output.
K900 BFM #15, #14 (CH1)Set the compare value for YH2 output(not necessary if only YH1 output is used).
~
M8000
M11 M13
Count allowed
Output allowed,Mutual reset
Preset allowed
Error flag reset
YH1 output reset
YH2 output reset
X010
M10
X011
M14
X012
PLS M18
X013
PLS M19
PLS M20
Counting only occurs if the count permit is set to ON. Also, outputs will not be set fromthe counting process at all if the relevant output prohibit is set in the command register.Please reset error flags and YH1/YH2 output before you start. The mutual reset andpreset initialization commands can be used as required.
The following programs are the examples of error processing.Error status in the FX3U-2HC can be checked by reading the contents of b0 to b15 ofBFM #29 to auxiliary relays of the PLC. These error flags are resettable BFM #4, #44 b8.
7. Preliminary checks1) Check that the I/O wiring and extension cable of the FX3U-2HC are properly
connected.2) The FX3U-2HC occupies 8 points of I/O on the FX3U, FX3UC expansion bus. The
8 points can be allocated from either inputs or outputs.5V DC 245mA power is supplied from the main or extension power supply unitsfor the FX3U-2HC. Check that there is no power overload from this and otherextension blocks.
3) The counter works correctly only when data such as the counter mode (set with apulse command), the TO command, the compare value, etc. are appropriatelyspecified. Remember to initialize the count (BFM #4, #44 b0), preset (BFM #4,#44 b4), and output (BFM #4, #44 b2, b1) prohibits. The YH1/YH2 outputs arereset during start.
Note: Inputting pulses higher than the maximum frequency may cause miscounting in theFX3U-2HC or a FROM/TO error in the PLC main unit.
8. Diagnostics
1) The following LEDs on the main panel of the FX3U-2HC may help you totroubleshoot the unit.
a) A, B:Goes on/off as A, B input turn ON/OFF. It can be checked by rotating theencoder slowly.
b) UP, DOWN:Lights up to indicate whether the counter is going up (UP) or down (DOWN).
c) PRE, DIS:The appropriate LED lights up when the PRESET (PRE) terminal or theDISABLE (DIS) terminal is ON.
d) YH1, YH2:The appropriate LED lights up when YH1/YH2 output is turned on.
2) You can check the error status by reading the content of BFM #29 to the PLC.For error contents, refer to the Subsection 5.2.11
STARTUP AND MAINTE-NANCE PRECAUTIONS
Do not disassemble or modify the PLC.Doing so may cause fire, equipment failures, or malfunctions.*For repair, contact your local Mitsubishi Electric representative.
Do not drop the product or exert strong impact to it.Doing so may cause damage.
DISPOSAL PRECAUTIONS
Please contact a certified electronic waste disposal company for theenvironmentally safe recycling and disposal of your device.
TRANSPORTATION AND STORAGE PRECAUTIONS
The product is a precision instrument. During transportation, avoid impacts largerthan those specified in the general specifications by using dedicated packagingboxes and shock-absorbing palettes. Failure to do so may cause failures in theproduct. After transportation, verify operation of the product and check fordamage of the mounting part, etc.
M8000K4M10K2 K4 K1
D2K2 K20 K1
RUNmonitor
FNC 79TO
FNC 78DFROM
M25 to M10 BFM #4 (b15 to b0) command (CH1)
BFM #21, #20 Reads the current value to the data registers D3 and D2. (CH1)
K4M100K2 K29 K1
K4M10K2 K4 K1
M8000
X004
M100
M18 Error flag reset
Y10 Error occurrence (BFM#29 b1 to b15 turn on)
M109
Y12 Hardware error occurrence
M108
Y11 Mode setting error occurrence
M8000
BFM #4 (CH1)
command write
FNC 78
FROM
FNC 79
TO
JY997D36701E
Safety Precaution (Read these precautions before use.)
This manual classifies the safety precautions into two categories:
and .
Depending on the circumstances, procedures indicated by mayalso cause severe injury.It is important to follow all precautions for personal safety.
Associated Manuals
How to obtain manualsFor product manuals or documents, consult with the Mitsubishi Electric dealerfrom who you purchased your product.
Certification of UL, cUL standardsThe following product has UL and cUL certification.
UL, cUL File Number:E95239Models: MELSEC FX3U series manufacturedfrom December 1st, 2009 FX3U-2HC
Indicates that incorrect handling may cause hazardousconditions, resulting in death or severe injury.
Indicates that incorrect handling may cause hazardousconditions, resulting in medium or slight personal injuryor physical damage.
Manual name Manual No. Description
FX3U Series User’s Manual - Hardware Edition
JY997D16501MODEL CODE:
09R516
Explains the FX3U Series PLC specifications for I/O, wiring, installation, and maintenance.
FX3UC Series User’s Manual - Hardware Edition
JY997D28701MODEL CODE:
09R519
Explains the FX3UC Series PLC specifications for I/O, wiring, installation, and maintenance.
FX3S/FX3G/FX3GC/FX3U/FX3UC Series Programming Manual - Basic & Applied Instruction Edition
JY997D16601MODEL CODE:
09R517
Describes FX3S/FX3G/FX3GC/FX3U/FX3UC Series PLC programming for basic/applied instructions and devices.
MELSEC iQ-F FX5UUser's Manual(Hardware)
JY997D55301MODEL CODE:
09R536
Explains the FX5U PLC specifications for I/O, wiring, installation, and maintenance.
MELSEC iQ-F FX5UCUser's Manual(Hardware)
JY997D61401MODEL CODE:
09R558
Explains the FX5UC PLC specifications for I/O, wiring, installation, and maintenance.
Compliance with EC directive (CE Marking)This note does not guarantee that an entire mechanical module produced inaccordance with the contents of this note will comply with the following standards.Compliance to EMC directive and LVD directive for the entire mechanical moduleshould be checked by the user / manufacturer. For more details please contact thelocal Mitsubishi Electric sales site.
Requirement for Compliance with EMC directiveThe following products have shown compliance through direct testing (of the identifiedstandards below) and design analysis (through the creation of a technical constructionfile) to the European Directive for Electromagnetic Compatibility (2014/30/EU) whenused as directed by the appropriate documentation.
AttentionThis product is designed for use in industrial applications.
Type: Programmable Controller (Open Type Equipment)Models: MELSEC FX3U series manufacturedfrom December 1st, 2009 FX3U-2HC
Caution for EC Directive Installation in Enclosure
Programmable controllers are open-type devices that must be installed and usedwithin conductive control cabinets. Please use the programmable controller whileinstalled within a conductive shielded control cabinet. Please secure the cabinetdoor to the control cabinet (for conduction). Installation within a control cabinetgreatly affects the safety of the system and aids in shielding noise from theprogrammable controller.
1. Outline1.1 OutlineThe hardware high-speed counter block is a 2-channel high-speed counter. It is aspecial function block for the FX3U/FX3UC/FX5U/FX5UC PLC.
1.2 Major Features of the FX3U-2HC Differential-Line-Driver (AM26C31 or equivalent) and open collector output
encoders are available for the FX3U-2HC. The FX3U-2HC has two outputs per channel. When the counter value coincides with
an output compare value, the appropriate output is set ON. The output transistorsare individually isolated to allow either sink or source connection methods.
Various counter modes, such as 1-phase or 2-phase, 16-bit or 32-bit modes, can beselected using commands in the sequence program. Allow the FX3U-2HC unit torun only after setting these mode parameters.
1.3 Incorporated ItemsVerify that the following product and items are included in the package:
1.4 External Dimensions, Part Names, and Terminal Layout
Weigh: Approx. 0.2 kg (0.44 lbs)
Standard Remark
EN61131-2:2007Programmable controllers
- Equipment requirementsand tests
Compliance with all relevant aspects of the standard.EMI• Radiated Emission• Conducted EmissionEMS• Radiated electromagnetic field• Fast transient burst• Electrostatic discharge• High-energy surge• Voltage drops and interruptions• Conducted RF• Power frequency magnetic field
Included Items
FX3U-2HC 1 Unit
Special unit/block No. label 1 Sheet
Dust proof protection sheet 1 Sheet
Manuals [Japanese version] 1 manual
Manuals [English version] (This manual) 1 manual
87 (3.43")9 (0.36")
[1] [5]
55 (2.17")
[2] [3] [4]
80 (3
.15")
(mou
nting
hole
pitch
)
[9]
[8]
90 (3
.55"
)
4 (0.16")
Without top cover
[5]
[6][5]
2-φ4.5 mounting holes
[7]
2. Installation, Connect to the PLC
No. Name
[1] Direct mounting hole: 2 holes of 4.5 (0.18") (mounting screw: M4 screw)Used when attaching FX3U-2HC directly.
[2]Extension cable (PLC side)Used to connect this special function block to the FX3U/FX3UC main unit or anextension block.
[3] CH1 connector
[4] CH2 connector
[5]
Status LED (the upper side: CH1, the lower side: CH2)
POWER (Green)
Power LEDON when the 5V power supply isnormally supplied from the PLC.
UP (Red) Up count LED The respective LED is ON accordingto up/down count direction of thecounter.DOWN (Red) Down count LED
A (Red) A phase input LED The respective LED is ON (flicker)according to ON/OFF of A and Binput.B (Red) B phase input LED
DIS (Red) DISABLE input LED The respec t ive LED is ON/OFFaccording to ON/OFF of PRESET andDISABLE input.PRE (Red) PRESET input LED
YH1 (Red) YH1 output LED The respec t ive LED is ON/OFFaccording to status of YH1 and YH2output.YH2 (Red) YH2 output LED
[6] Top cover
[7]Extension connector (Extension side)Used to connect a FX3U extension block to the right of this special functionblock. Remove top cover for connecting.
[8] DIN rail mounting hook
[9] DIN rail mounting groove (DIN rail: DIN46277, 35mm (1.38") width)
INSTALLATION PRECAUTIONS
Make sure to cut off all phases of the power supply externally before attemptinginstallation or wiring work. Failure to do so may cause electric shock or damage to the product.
INSTALLATION PRECAUTIONS
Use the product within the generic environment specifications described in PLCmain unit manual.Never use the product in areas with excessive dust, oily smoke, conductive dusts,corrosive gas (salt air, Cl2, H2S, SO2, or NO2), flammable gas, vibration orimpacts, or expose it to high temperature, condensation, or rain and wind. If the product is used in such conditions, electric shock, fire, malfunctions,deterioration or damage may occur.
CH2
A24+
A5+
B24+
B5+
P24+
P5+
A12+
A-
B12+
B-
P12+
P-
XD24
YH1+
YH2+
XD5
COMD
YH1-
YH2-
Notch
CH1
A24+
A5+
B24+
B5+
P24+
P5+
A12+
A-
B12+
B-
P12+
P-
XD24
YH1+
YH2+
XD5
COMD
YH1-
YH2-
YH1 output
YH2 output
Notch
FX3U-2HC connector arrangement
Phase A
input
Phase B
input
PRESET
input
DISABLE
input
2.1 MountingThe product is mounted by the following method.
DIN rail mounting
Direct mounting (mounting screw: M4 screw)For further information on installation arrangements, refer to the following manuals.
Refer to the FX3U Series User's Manual - Hardware Edition.Refer to the FX3UC Series User's Manual - Hardware Edition.Refer to the MELSEC iQ-F FX5U User's Manual (Hardware).
Refer to the MELSEC iQ-F FX5UC User's Manual (Hardware).
2.1.1 DIN Rail MountingThe product can be mounted on a DIN rail(DIN46277, 35mm (1.38") width).
1) Fit the upper edge of the DIN rail mountinggroove (fig. A) onto the DIN rail.
2) Press the product against the DIN rail.
- An interval space of 1 to 2 mm (0.04" to 0.08") between each unit is necessary.
2.1.2 Direct Mounting (mounting screw: M4 screw)The product can be installed directly with screws.Refer to the External Dimensions (section 1.4) for the product’s mounting holepitch information. An interval space between each unit of 1 to 2 mm (0.04" to 0.08") is necessary.
2.2 Connection to the PLCA maximum of eight*1*2 FX3U-2HC(s) are connectable with the main unit or theright side of the powered extension unit/block. A unit number of No.0 to No.7 isassigned based on the order in which special function units/blocks are attached tothe main unit.For connection to an FX3UC Series PLC or FX2NC Series PLC extension block, anFX2NC-CNV-IF or FX3UC-1PS-5V is required.For connection to an FX5U or FX5UC PLC, an FX5-CNV-BUS or FX5-CNV-BUSCis required.
*1 Up to seven special function units/blocks in total can be connected to theFX3UC-32MT-LT(-2) PLC. Unit numbers assigned to special function units/blocks begins with No.1.
*2 Up to two special function units/blocks in total can be connected to theFX5U or FX5UC PLC. Unit numbers assigned to special function units/blocks begins with No.2.
For further information on installation arrangements, refer to the following manuals.Refer to the FX3U Series User's Manual - Hardware Edition.
Refer to the FX3UC Series User's Manual - Hardware Edition.Refer to the MELSEC iQ-F FX5U User's Manual (Hardware).
Refer to the MELSEC iQ-F FX5UC User's Manual (Hardware).
3. Wiring
INSTALLATION PRECAUTIONS
Do not touch the conductive parts of the product directly.Doing so may cause device failures or malfunctions.
Install the product on a flat surface.If the mounting surface is rough, undue force will be applied to the PC board,thereby causing nonconformities.
When drilling screw holes or wiring, make sure cutting or wire debris doesnot enter the ventilation slits.Failure to do so may cause fire, equipment failures or malfunctions.
Be sure to remove the dust proof sheet from the PLC's ventilation port wheninstallation work is completed.Failure to do so may cause fire, equipment failures or malfunctions.
Connect extension cables securely to their designated connectors.Loose connections may cause malfunctions.
WIRING PRECAUTIONS
Make sure to cut off all phases of the power supply externally beforeattempting installation or wiring work.Failure to do so may cause electric shock or damage to the product.
When drilling screw holes or wiring, make sure cutting or wire debris doesnot enter the ventilation slits. Failure to do so may cause fire, equipment failures or malfunctions.
1)
2)
A
3.1 Connection to input/output connectorThe input and output connectors conform to the MIL-C-83503.For the input and output connectors pin assignment, refer to section 1.4.1) Compliant connectors (commercially available connectors)
Use a 40-pin (1-key) socket connector conforming to MIL-C-83503.Confirm in advance that the connectors do not interfere with other partsincluding connector covers.
2) Connectors for user-made input/output cables (available from Mitsubishi)Users should provide electric wires and a pressure bonding tool.
3.2 WiringNote:Make sure to properly wire in accordance with the encoder output specifications. Incorrect wiring may cause accidents or damage to the product.
3.2.1 NPN output encoders
WIRING PRECAUTIONS
Make sure to observe the following precautions in order to prevent anydamage to the machinery or accidents due to abnormal data written to thePLC under the influence of noise:
1) Do not bundle the main circuit line together with or lay it close to the maincircuit, high-voltage line or load line. Otherwise, noise disturbance and/orsurge induction are likely to take place. As a guideline, lay the control line atleast 100mm (3.94") or more away from the main circuit or high-voltage lines.
2) Ground the shield wire or shield of the shielded cable at two points; on thePLC and the device on other end. However, do not use common groundingwith heavy electrical systems.
Model name and composition of input/output connector
Applicable electric wire (UL-1061 are recommended)
and tool
Our model name
Details of part (made by DDK Ltd.)
Electric wire size
Pressure bonding tool (made by DDK Ltd.)
FX-I/O-CON2-Sfor bulk wire(2-piece set)
Housing:HU-400S2-001Solderless contact:HU-411S
AWG22 (0.3mm2)
357J-5538
FX-I/O-CON2-SAfor bulk wire(2-piece set)
Housing:HU-400S2-001Solderless contact:HU-411SA
AWG20 (0.5mm2)
357J-13963
Encoder (NPN)
+24V
0V
24V DC*1
*1
PhaseZ
PhaseA
Class D
PRESET*3
DISABLE
A24+
A12+
A 5+
A -
3.3k
1.5k
0.2k
0.12k
XD24
XD 5
COMD
1.65k
0.47k
0.22k
*1
*1
Wiring of the B phase is the same as that of the A phase.
*1
*2*2
P24+
P12+
P 5+
P -
3.3k
1.5k
0.2k
0.12k
Class D
Class D
Class D Class D
Class D
FX3U
FX3UC
FX3U-2HC
*3
Shielded
Twisted-Pair
Shielded
Twisted-Pair
Shielded
Twisted-Pair
Drive power supply of the encoder.Use either 24V DC, 12V DC, or 5V DC according to the encoder type.When connecting the A phase, the B phase, and the Z phase to theFX3U-2HC, connect to the power supply terminal.When using 24V DC for PRESET or DISABLE signals, connect to the 24VDC (P24+, XD24) terminal
*1.
This wiring is unnecessary when not using the PRESET function or the
DISABLE function.
*2.
*3.
3.2.2 PNP output encoders
3.2.3 Differential-Line-Driver output encodersWhen applying the Differential-Line-Driver encoder (AM26C31 or equivalent) to theFX3U-2HC, connect the encoder output with the 5V DC terminal as shown in the figurebelow.
3.2.4 YH1, YH2 output wiring [Sink wiring]
CautionA protection fuse should be inserted at the output.Use a load power supply capacity that is at least 2 times larger than the total rated fuse capacity.
Class D
Encoder (PNP)
+24V
0V
24V DC
*1
PRESET *3
DISABLE*3
PhaseA
*1
*1
*1
*3.
*2. Wiring of the B phase is the same as that of the A phase.
A24+
A12+
A 5+
A -
3.3k
1.5k
0.2k
0.12k
*2 *2
Class D
XD24
XD 5
COMD
1.65k
0.47k
0.22k
P24+
P12+
P 5+
P -
3.3k
1.5k
0.2k
0.12k
Class D
Class D
Class D
Class D
FX3U
FX3UC
FX3U-2HC Shielded
Twisted-Pair
Shielded
Twisted-Pair
Shielded
Twisted-Pair
*1
PhaseZ
Drive power supply of the encoder.Use either 24V DC, 12V DC, or 5V DC according to the encoder type.When connecting the A phase, the B phase, and the Z phase to theFX3U-2HC, connect to the power supply terminal.When using 24V DC for PRESET or DISABLE signals, connect to the 24VDC (P24+, XD24) terminal.
*1.
This wiring is unnecessary when not using the PRESET function or the
DISABLE function.
Class D
Encoder
A 5+
A -
0.2k
0.12k
XD 5
COMD
0.47k
0.22k
+5V
0V
5V DC
LA
LAR
P 5+
P -
0.2k
0.12k
PRESET *2
Wiring of the B phase is the same as that of the A phase.
DISABLE *2
LZR
LZ
*1 *1
FX3U
FX3UC
FX3U-2HC
This wiring is unnecessary when not using the PRESET function or the
DISABLE function.
*1.
*2.
YH1+
YH1-
YH2+
YH2-
Fuse
FX3U-2HC
Output load driving
power, 5 - 24V DC
3.2.5 YH1, YH2 output wiring [Source wiring]
CautionA protection fuse should be inserted at the output.Use a load power supply capacity that is at least 2 times larger than the total rated fuse capacity.
3.3 GroundingGrounding should be performed as stated below.
The grounding resistance should be 100 or less. Independent grounding should be performed for best results.
When independent grounding is not performed, perform "shared grounding"of the following figure.
For details, refer to the FX3U Series User's Manual - Hardware Edition.For details, refer to the FX3UC Series User's Manual - Hardware Edition.For details, refer to the MELSEC iQ-F FX5U User's Manual (Hardware).
For details, refer to the MELSEC iQ-F FX5UC User's Manual (Hardware).
The grounding wire size should be AWG 22-20 (0.3-0.5 mm2). The grounding point should be close to the PLC, and all grounding wires
should be as short as possible.
4. Specifications
4.1 General SpecificationsThe general specifications are equivalent to the PLC main unit. (For general specifications, refer to the manual of the PLC main unit.)Caution
When a dielectric withstand test of this product is performed, ground all terminals of this product and the PLC unit.
4.2 Power Supply Specifications
DESIGN PRECAUTIONS
Make sure to have the following safety circuits outside of the PLC to ensure safesystem operation even during external power supply problems or PLC failure.Otherwise, malfunctions may cause serious accidents.
1) Most importantly, have the following: an emergency stop circuit, a protectioncircuit, an interlock circuit for opposite movements (such as normal vs.reverse rotation), and an interlock circuit (to prevent damage to theequipment at the upper and lower positioning limits).
2) Note that when the PLC CPU detects an error, such as a watchdog timererror, during self-diagnosis, all outputs are turned off. Also, when an error thatcannot be detected by the PLC CPU occurs in an input/output control block,output control may be disabled. External circuits and mechanisms should be designed to ensure safemachinery operation in such a case.
3) Note that when an error occurs in a relay, triac or transistor output device, theoutput could be held either on or off.For output signals that may lead to serious accidents, external circuits andmechanisms should be designed to ensure safe machinery operation in sucha case.
DESIGN PRECAUTIONS
Do not bundle the control line together with or lay it close to the main circuit orpower line. As a guideline, lay the control line at least 100mm (3.94") or moreaway from the main circuit or power line.Noise may cause malfunctions.
Install module so that excessive force will not be applied to I/O connectors.Failure to do so may result in wire damage/breakage or PLC failure.
Item Specifications
Units driving power5V DC, 245mA (Internal power supply from main unitor extension power supply unit)
Allowable instantaneous power failure time
Operation can be continued upon occurrence ofinstantaneous power failure for 1 ms or less.
YH1+
YH1-
YH2+
YH2-Fuse
FX3U-2HC
Output loaddriving power,5 - 24V DC
PLCPLCPLCAnother
equipment
Shared groundingGood condition
Common groundingNot allowed
Independent groundingBest condition
Anotherequipment
Anotherequipment
4.3 Performance Specifications
4.4 Applicable PLC
*1 An FX2NC-CNV-IF or FX3UC-1PS-5V is necessary to connect the FX3U-2HC with the FX3UC PLC.
*2 An FX5-CNV-BUS or FX5-CNV-BUSC is necessary to connect the FX3U-2HC with the FX5U/FX5UC PLC.
*3 The version number can be checked by reading the last three digits ofdevice D8001/D8101.
Item Specification
Input signal
Signal level(Selected by terminal connec-tion)
Phase A,Phase B,PRESET
[A24+],[B24+],[P24+]
24V DC10%, 8mA or less
[A12+],[B12+],[P12+]
12V DC10%, 8mA or less
[A5+],[B5+],[P5+]
3.0V to 5.5V DC, 12.5mA or less
DISABLE
[XD24]10.8V to 26.4V DC, 15mA or less
[XD5]5V DC10%, 8mA or less
MAX. frequency
1-phaseinput
1 input
200kHz2 input
2 -phaseinput
1 edge count
2 edge count 100kHz
4 edge count 50kHz
Pulse shape
t1(ON/OFF pulse): 1.5s or more (at 200kHz)t2(Phase difference between A and B):
0.75s or more (at 200kHz)t3(Overlap time): 0.7s or more (at 200kHz)t4(Rise/fall time): 0.75s or lessPRESET(Z phase) input signal width:
ON width 1.5s or more,OFF width 30s or more
DISABLE (count prohibit) input signal width:ON width 100s or more,OFF width 100s or more
Count-ing spec-ification
Format
Automatic UP/DOWNHowever, when on 1-phase 1-input mode, UP/DOWN is determined by the following. Hardware UP/DOWN: Up/down count is decided
by OFF/ON of the A-phase input terminal. Software UP/DOWN: Up/down count is decided
by the current value (K0/K1) of BFM #1, #41.
Range
When 32-bit is specified: -2,147,483,648 to +2,147,483,647
When 16-bit is specified: 0 to 65,535 (upper limit is set up by BFM #3, #2, #43, #42.)
Compari-son Type
When the present value and the comparison setvalue of the counter are equal, the comparisonoutput is set (ON) within 30 ms and is cleared (OFF)within 100 ms by the reset command.
Output signal
Types of outputs
YH1+: transistor output forYH1 output
YH1-: transistor output forYH1 output
YH2+: transistor output forYH2 output
YH2-: transistor output for YH2 output
Output capacity
5V ~ 24V DC, 0.5A
I/O occupation 8 points (can be either inputs or outputs)
Model name Applicability
FX3U Series PLC Ver. 2.20 and later*3
FX3UC Series PLC*1 Ver. 2.20 and later*3
FX5U PLC*2 From first production
FX5UC PLC*2 From first production
t4 t4
t1 t1
t2 t3
YH1+,
YH2+
YH1-,
YH2-
FX3U-2HC
USER’S MANUAL
This manual describes the part names, dimensions, mounting, wiring, andspecifications of the product. Before use, read this manual and the manuals of allrelevant products fully to acquire proficiency in handling and operating the product.Make sure to learn all the product information, safety information, and precautions.Store this manual in a safe place so that it can be taken out and read whenevernecessary. Always forward it to the end user.Registration:The company names, system names and product names mentioned in this manualare either registered trademarks or trademarks of their respective companies.
In some cases, trademark symbols such as '' or '' are not specified in this manual.
Effective March 2019Specifications are subject to change without notice.
Manual Number JY997D36701
Revision E
Date March 2019
This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual.
WarrantyExclusion of loss in opportunity and secondary loss from warranty liabilityRegardless of the gratis warranty term, Mitsubishi shall not be liable for compensation to:(1) Damages caused by any cause found not to be the responsibility of Mitsubishi.(2) Loss in opportunity, lost profits incurred to the user by Failures of Mitsubishi products.(3) Special damages and secondary damages whether foreseeable or not, compensation for
accidents, and compensation for damages to products other than Mitsubishi products.(4) Replacement by the user, maintenance of on-site equipment, start-up test run
and other tasks.
For safe useThis product has been manufactured as a general-purpose part for general industries, and has not been designed or manufactured to be incorporated in a device or system used in purposes related to human life.Before using the product for special purposes such as nuclear power, electric power, aerospace, medicine or passenger movement vehicles, consult with Mitsubishi Electric.This product has been manufactured under strict quality control. However when installing the product where major accidents or losses could occur if the product fails, install appropriate backup or failsafe functions in the system.
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HEAD OFFICE : TOKYO BUILDING, 2-7-3 MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
9. Reference (CH1 System Block Diagram)
TO
DISABLE
PRESET
S YH1
Direct initialization
Count start
16/32-bit Counter
for YH1 output
Matched
Count pulse
TO
TO
TO
Counter mode
Counter mode BFM #01-phase1-inputcounter
DOWN/UP command BFM #1
16 bit mode32 bit mode
Count permit BFM #4 b0
Preset permit BFM #4 b4
Direct initializationTO
R
S
R
YH2
for YH2 output
Matched
TO
DISABLE
PRESET
YH1
YH2
: Module input/output
: Buffer memory
Preset dataBFM #11,#10
Current value registerBFM #21,#20
Maximum value BFM #23,#22Minimum value BFM #25,#24
Terminal statusBFM #27
YH2 output resetBFM #4 b10
Mutual reset actionBFM #4 b3YH2 compared output
BFM #4 b2
YH2 output setBFM #4 b12
Comparision dataBFM #15,#14
Compare resultsBFM #26
Comparison dataBFM #13,#12
YH1 output resetBFM #4 b9
YH1 output setBFM #4 b11
YH1 compared outputBFM#4 b1
CH1 Error flag resetBFM #4 b8
CH1 Error statusBFM #29 b0 to b8
H/WDOWN/UP
S/WDOWN/UP
Ring length upper limit valueBFM #3,#2
*1 The mutual reset action becomes valid only when both the YH1 comparison output and the YH2 comparison output are permitted (BFM #4 b1, b2=ON).
*1
BA
Z
5. Buffer Memories (BFM)5.1 Buffer memory ListNote:1) When writing to BFM #0 (CH1 counter mode), BFM #1 to #27 and #29 bit1 to
6 will be initialized. When writing to BFM #40 (CH2 counter mode), BFM #41to #67 and #29 bit10 to 15 will be initialized.When setting the counter mode, use a TOP (pulsed) instruction, or M8002(initial pulse) to drive the TO instruction. (The continuous operation typecannot be used.)
2) Read/Write of 16 bit dataWhen using a positive value between K32,768 and K65,535 with 16 bitcounters, read/writes of data, such as the current value, ring length, presetdata, YH1/YH2 compare value, maximum count value and the minimumcount value should use the 32-bit forms of FROM/TO instructions ((D)FROM, (D) TO).
3) Read/write of 32 bit dataThe usage of a 32-bit FROM/TO instruction is recommended. In the event that a 16-bit FROM/TO instruction is used, the following casesneed to be considered. If the writing order is low word first and then high word, the 32 bit data will
be written normally. Data becomes valid after both low and high words arewritten.
In the event that data is not written in the order low word first and then highword, the error bit b7 of BFM #29 turns ON.
5.2 Details of buffer memories
5.2.1 Counter mode [BFM #0 (CH1), #40 (CH2)]The counter mode is shown in the upper right table. (Default value: K0)
Note:When writing to BFM #0 (CH1 counter mode), BFM #1 to #27 and #29 bit1 to 6 willbe initialized. When writing to BFM #40 (CH2 counter mode), BFM #41 to #67 and#29 bit10 to 15 will be initialized. Please perform the setting of other BFM(s) afterthe setting of the counter mode (BFM #0, #40).When setting the counter mode, use a TOP (pulsed) instruction, or M8002 (initialpulse) to drive the TO instruction. (The continuous operation type cannot be used.)
BFM #Description Default
BFMAccessCH1 CH2
BFM #0 BFM #40Counter mode (Setting range: K0 to K11)
K0 R/W
BFM #1 BFM #41DOWN/UP command (1-phase 1-input mode [S/W UP/DOWN] only)
K0 R/W
BFM #2 BFM #42Ring length
LowerK65536
R/W
BFM #3 BFM #43 Upper R/W
BFM #4 BFM #44 Command K0 R/W
BFM #5~ #9
BFM #45~ #49
Not used - -
BFM #10 BFM #50Preset data
LowerK0
R/W
BFM #11 BFM #51 Upper R/W
BFM #12 BFM #52YH1 compare value
LowerK32767
R/W
BFM #13 BFM #53 Upper R/W
BFM #14 BFM #54YH2 compare value
LowerK32767
R/W
BFM #15 BFM #55 Upper R/W
BFM #16~ #19
BFM #56~ #59
Not used - -
BFM #20 BFM #60Counter current value
LowerK0
R/W
BFM #21 BFM #61 Upper R/W
BFM #22 BFM #62Maximum count value
LowerK0
R/W
BFM #23 BFM #63 Upper R/W
BFM #24 BFM #64Minimum count value
LowerK0
R/W
BFM #25 BFM #65 Upper R/W
BFM #26 BFM #66 Compare results - R
BFM #27 BFM #67 Terminal status - R
BFM #28 Not used - -
BFM #29 Error status - R
BFM #30 Model identification code: K4020 K4020 R
BFM #31 ~ 39 Not used - -
BFM #68 ~ 32767 Not used - -
1) 16/32-bit counter modesa) 32-bit counter modes
Modes: K0, K2, K4, K6, K8, K10A 32-bit binary counter which executes UP/DOWN counting will change from the lowerlimit value to the upper limit value or theupper limit value to the lower limit valuewhen overflow occurs. Both the upper andlower limit values are fixed values: the upperlimit value is +2,147,483,647, and the lowerlimit value is -2,147,483,648.
b) 16-bit counter modes Modes: K1, K3, K5, K7, K9, K11A 16-bit binary counter handles only positivevalues from 0 to 65,535. Changes to zerofrom the upper limit value or to the upperlimit value from zero when overflow occurs;the upper limit value is determined by BFMs#3 and #2 (CH1), #43 and #42 (CH2).
2) 2-phase counter [1 edge-count] (K0, K1)
3) 2-phase counter [2 edge-count] (K2, K3)
4) 2-phase counter [4 edge-count] (K4, K5)
5) 1-phase 2-input counter (K6, K7)
6) 1-phase 1-input counter [Hardware UP/DOWN] (K8, K9)
7) 1-phase 1-input counter [Software UP/DOWN] (K10, K11)
Count modes 32 bits 16 bits Reference
2-phase input (phase difference pulse)
1 edge count K0 K1 1), 2)
2 edge count K2 K3 1), 3)
4 edge count K4 K5 1), 4)
1-phase 2-input (add/subtract pulse) K6 K7 1), 5)
1-phase 1-input
Hardware UP/DOWN K8 K9 1), 6)
Software UP/DOWN K10 K11 1), 7)
0
+2,147,483,647
Upper limit value
Lower limit value
-2,147,483,648
0
Ring lengthCH1 : (BFM #3, #2) -1CH2 : (BFM #43, #42) -1
Phase A
Phase B
+1+1 -1-1
Phase B input OFF →
ON while phase A input
ON Count up by 1.
Phase B input ON →
OFF while phase A input
ON Count down by 1.
Phase A
Phase B
+1+1 -1-1
Phase B input OFF →
ON (ON → OFF) while
phase A input ON (OFF)
Count up by 1.
Phase B input ON →
OFF (OFF → ON) while
phase A input ON (OFF)
Count down by 1.
DOWN COUNT
Phase A
Phase B
UP COUNT
+1+1 +1+1 -1-1 -1-1
Phase A
Phase B
ON
OFF 1 04 23321
ON
OFF
Phase A input-1
at OFF → ON
Phase B input+1
at OFF → ON
Phase A
Phase B
Currentvalue
UP DOWN
ONOFF
ON
OFF
UP/DOWN is
determined by input
phase A (ON/OFF).
BFM #1, #41
Phase B
UPDOWN
K1K0
ON
OFF
Currentvalue
UP/DOWN is determined
by the contents of
BFM #1, #41 (K0/K1).
5.2.2 DOWN/UP command [BFM #1 (CH1), #41 (CH2)]When using the 1-phase 1-input counter [Software UP/DOWN] (counter mode: K10,K11), set the count direction by the current value of BFM #1 or BFM #41. (Defaultvalue: K0)
For the operation, refer to the Subsection 5.2.1 7)
5.2.3 Ring length [BFM #3, #2 (CH1), #43, #42 (CH2)]When setting the upper limit value of the 16 bit counters, the setting range is K2 toK65536. (Default value: K65536) Please use the DTO instruction and write data as 32 bit data.When ring length K100 is specified, the current value of the counter is changed asshown the following figure, and the upper limit value is set to 99.
5.2.4 Command [BFM #4 (CH1), #44 (CH2)]
*1 When b0 is set to ON and the DISABLE input terminal to OFF, the counter ispermitted to start counting input pulses.
*2 Unless b1 is set to ON, YH1 (compared output) does not turn ON.
*3 Unless b2 is set to ON, YH2 (compared output) does not turn ON.
*4 When b3=ON, YH2 output is reset if YH1 output is set, and YH1 output is reset ifYH2 output is set. When b3=OFF, YH1 and YH2 output act independently, anddo not reset each other.The mutual reset action becomes valid only when both the YH1 comparisonoutput and the YH2 comparison output are permitted (b1, b2=ON).
*5 When b4=OFF, the preset function using the PRESET input terminal is disabled.
*6 When bit 5 is set to ON, the counter will be stopped and reset and the outputsYH1 and YH2 will be switched OFF when the PLC is set from RUN to STOP.
*7 When bit 8 in BFM #4 is set to ON, the error flags bit 1 to 6 in BFM #29 will bereset. The shared error flags (bit 7 and bit 8) will also be reset if no error on theother counter channel requires them to remain ON. When bit 8 in BFM #44 is setto ON, the error flags bit 10 to 15 in BFM #29 will be reset. The shared error flags(bit 7 and bit 8) will also be reset if no error on the other counter channel requiresthem to remain ON. After clearing BFM #29 error flags this flag will be resetautomatically.
*8 b9 to b12 can perform a forced set of the YH1 output or the YH2 output, andreset.The output is not changed when the forced set and reset are performedsimultaneously.
5.2.5 Preset data [BFM #11, #10 (CH1), #51, #50 (CH2)]When BFM #4, #44 b4 is ON and the PRESET input is switched from OFF to ON,preset data is stored in BFM #21, #20 (CH1) #61, #60 (CH2) (counter current value).
5.2.6 YH1 compare value [BFM #13, #12 (CH1), #53, #52 (CH2)], YH2 compare value [BFM #15, #14 (CH1), #55, #54 (CH2)]
The comparison set value for the output currently written here and the present valueof the counter are measured, and when the comparison result is equal, the YH1output or the YH2 output is set to ON within 30 s.
Count Direction Setting Value
Up count K0
Down count K1
Bit No.Setting Value
OFF (0) ON (1)
b0*1 Count prohibit Count permit
b1*2 YH1 compared output prohibit YH1 compared output permit
b2*3 YH2 compared output prohibit YH2 compared output permit
b3*4 YH1/YH2 independent action Mutual reset action
b4*5 Preset prohibit Preset permit
b5*6No action if PLC is set from RUN
to STOP(FX2N-1HC compatibility mode)
Counter is stopped and reset if PLC is set from RUN to STOP
b6, b7 Not used
b8*7 No action Error flag reset
b9*8 No action YH1 output reset
b10*8 No action YH2 output reset
b11*8 No action YH1 output set
b12*8 No action YH2 output set
b13 ~ b15 Not used
UP9998 0 1
DOWN1 0 9899
Output occurs when the current value becomes equal to the compare value butonly if b1 and b2 of BFM #4, #44 are ON. Once an output is set, it remains ONuntil it is reset by b9 or b10 of BFM #4, #44.
If b3 of BFM #4, #44 is ON, however, one of the outputs is reset when the other is set.(refer to the following figure)
5.2.7 Counter current value [BFM #21, #20 (CH1), #61, #60 (CH2)]The current value of the counter can be read by the PLC. It will not be an accuratevalue during high-speed operations because of the communication delay. Thecurrent value of the counter can be forcibly changed by writing a 32-bit value intothe appropriate BFMs from the PLC.
5.2.8 Maximum count value [BFM #23, #22 (CH1), #63, #62 (CH2)],Minimum count value [BFM #25, # 24 (CH1), #65, #64 (CH2)]
These BFM store the maximum and minimum value reached by the counter. If thepower is turned off, the stored data is cleared. Any value written to maximum andminimum count value in 16 bit counter mode which is exceeding the valid range (0 <= value < ring length) will be automatically adjusted. Values < 0 will beadjusted to 0, values >= ring length will be adjusted to "ring length" - 1.
5.2.9 Compare results [BFM #26 (CH1), #66 (CH2)]
5.2.10 Terminal status [BFM #27 (CH1), #67 (CH2)]
5.2.11 Error status [BFM #29]
Bit No.Target output
OFF (0) ON (1)
b0
YH1
Compare value current value Compare value current value
b1 Compare value current value Compare value current value
b2 Compare value current value Compare value current value
b3
YH2
Compare value current value Compare value current value
b4 Compare value current value Compare value current value
b5 Compare value current value Compare value current value
b6 ~ b15 Not used
Bit N0. Signal Name OFF (0) ON (1)
b0 PRESET input OFF ON
b1 DISABLE input OFF ON
b2 YH1 output OFF ON
b3 YH2 output OFF ON
b4 ~ b15 Not used
Bit N0. Error Status
b0 Set when any of b1 to b15 is ON.
b1Set when the value of the ring length iswritten incorrectly. (CH1)
Outside of K2 to K65,536 Written while CH1 is in
32-bit counter mode Ring length changed
while counter running
b2Set when the preset value is writtenincorrectly. (CH1)
Value is other than "K0 to ringlength-1" for 16-bit counters.
b3 Set when the compare value is writtenincorrectly. (CH1) Value is other than "K0 to ring
length-1" for 16-bit counters.b4 Set when the current value is written
incorrectly. (CH1)
b5Set when the counter overflows theupper limit. (CH1) When the upper or lower limit
i s exceeded on a 32 -b i tcounter.b6 Set when the counter underflows the
lower limit. (CH1)
b7 Set when the FROM/TO command is used incorrectly.*1
YH1/YH2 output
Current valueYH1/YH2
compare value
BFM #4,#44
b9,b10:ON
BFM #4,#44
b9,b10:ON
YH1 compare value
YH2 compare valueCurrent value
YH1 output
YH2 output
*1 In the following case, BFM #29 b7 turns on.
write in a BFM that is not used writing to read only BFMs accessing 32 bit BFMs using the FROM/TO command in the wrong order
Error status in the FX3U-2HC can be checked by reading the contents of b0 to b15of BFM #29 to auxiliary relays of the PLC.The error flag of b1 to b8 is reset-table with ON of BFM #4 b8. The error flag of b7,b8 and b10 to b15 is resettable with ON of BFM #44 b8. The error flags in BFM#29 can also be reset by writing 0 to it. The Hardware error flag (bit 9 of BFM #29)can not be cleared.5.2.12 Model identification code [BFM #30]This BFM stores the identification number for the FX3U-2HC.The identification number for the FX3U-2HC unit is K4020.By reading this identification number, the user may create built-in checkingroutines to check whether the physical position of the FX3U-2HC matches that ofthe software.
6. Example ProgramPlease use the following program as a guide whenever you use the FX3U-2HC unit.Other instructions to read the current value of the counter, status etc. can be addedas required.
Bit N0. Error Status
b8Set when the counter mode (BFM #0,#40) is written incorrectly. Except K0 to K11
b9 Hardware error (UP, DOWN LED turn ON)
b10Set when the value of the ring length iswritten incorrectly. (CH2)
Outside of K2 to K65,536 Written while CH2 is in
32-bit counter mode Ring length changed
while counter running
b11Set when the preset value is writtenincorrectly. (CH2)
Value is other than "K0 toring length-1" for 16-bitcounters.
b12 Set when the compare value is writtenincorrectly. (CH2)
b13 Set when the current value is writtenincorrectly. (CH2)
b14Set when the counter overflows the upperlimit. (CH2) When the upper or lower
limit is exceeded on a 32-bit counter.b15 Set when the counter underflows the
lower limit. (CH2)
K11K2 K0 K1
K1234K2 K2 K1
K1K2 K1 K1
M8002
Initialpulse K11 is written into BFM #0 (CH1) of special function block No.2.
The counter input is 16-bit 1-phase. Please use a pulse command for this initialization.
K1234 BFM #3, #2 (CH1) (special function block No.2)The ring length can be specified when a 16-bit counter is specified.
UP/DOWN direction should be specified for 1-phase 1-inputsoftware determined UP/DOWN counter.
FNC 79 TO
FNC 79DTO
FNC 79TO
K1000K2 K12 K1
K900K2 K14 K1
FNC 79DTO
FNC 79DTO
K1000 BFM #13, #12 (CH1)Set the compare value for YH1 output.
K900 BFM #15, #14 (CH1)Set the compare value for YH2 output(not necessary if only YH1 output is used).
~
M8000
M11 M13
Count allowed
Output allowed,Mutual reset
Preset allowed
Error flag reset
YH1 output reset
YH2 output reset
X010
M10
X011
M14
X012
PLS M18
X013
PLS M19
PLS M20
Counting only occurs if the count permit is set to ON. Also, outputs will not be set fromthe counting process at all if the relevant output prohibit is set in the command register.Please reset error flags and YH1/YH2 output before you start. The mutual reset andpreset initialization commands can be used as required.
The following programs are the examples of error processing.Error status in the FX3U-2HC can be checked by reading the contents of b0 to b15 ofBFM #29 to auxiliary relays of the PLC. These error flags are resettable BFM #4, #44 b8.
7. Preliminary checks1) Check that the I/O wiring and extension cable of the FX3U-2HC are properly
connected.2) The FX3U-2HC occupies 8 points of I/O on the FX3U, FX3UC expansion bus. The
8 points can be allocated from either inputs or outputs.5V DC 245mA power is supplied from the main or extension power supply unitsfor the FX3U-2HC. Check that there is no power overload from this and otherextension blocks.
3) The counter works correctly only when data such as the counter mode (set with apulse command), the TO command, the compare value, etc. are appropriatelyspecified. Remember to initialize the count (BFM #4, #44 b0), preset (BFM #4,#44 b4), and output (BFM #4, #44 b2, b1) prohibits. The YH1/YH2 outputs arereset during start.
Note: Inputting pulses higher than the maximum frequency may cause miscounting in theFX3U-2HC or a FROM/TO error in the PLC main unit.
8. Diagnostics
1) The following LEDs on the main panel of the FX3U-2HC may help you totroubleshoot the unit.
a) A, B:Goes on/off as A, B input turn ON/OFF. It can be checked by rotating theencoder slowly.
b) UP, DOWN:Lights up to indicate whether the counter is going up (UP) or down (DOWN).
c) PRE, DIS:The appropriate LED lights up when the PRESET (PRE) terminal or theDISABLE (DIS) terminal is ON.
d) YH1, YH2:The appropriate LED lights up when YH1/YH2 output is turned on.
2) You can check the error status by reading the content of BFM #29 to the PLC.For error contents, refer to the Subsection 5.2.11
STARTUP AND MAINTE-NANCE PRECAUTIONS
Do not disassemble or modify the PLC.Doing so may cause fire, equipment failures, or malfunctions.*For repair, contact your local Mitsubishi Electric representative.
Do not drop the product or exert strong impact to it.Doing so may cause damage.
DISPOSAL PRECAUTIONS
Please contact a certified electronic waste disposal company for theenvironmentally safe recycling and disposal of your device.
TRANSPORTATION AND STORAGE PRECAUTIONS
The product is a precision instrument. During transportation, avoid impacts largerthan those specified in the general specifications by using dedicated packagingboxes and shock-absorbing palettes. Failure to do so may cause failures in theproduct. After transportation, verify operation of the product and check fordamage of the mounting part, etc.
M8000K4M10K2 K4 K1
D2K2 K20 K1
RUNmonitor
FNC 79TO
FNC 78DFROM
M25 to M10 BFM #4 (b15 to b0) command (CH1)
BFM #21, #20 Reads the current value to the data registers D3 and D2. (CH1)
K4M100K2 K29 K1
K4M10K2 K4 K1
M8000
X004
M100
M18 Error flag reset
Y10 Error occurrence (BFM#29 b1 to b15 turn on)
M109
Y12 Hardware error occurrence
M108
Y11 Mode setting error occurrence
M8000
BFM #4 (CH1)
command write
FNC 78
FROM
FNC 79
TO
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